Link Checker of Amazon Affiliate does not work

I manage several websites such as www.Latestfoto.com www.immigrationopportunity.com HiChicas.com etc and have published more that 10000 articles. 

These articles are written on different subjects: Holidays, travel and hotels, Science, Research and development, Technical knowledge, Know-how, Coding, Website developments, Opportunities for immigration, Work, study, travel and visa, product review, movie review, finance, retirement plans, girl´s issues, and many more. 

I can say that my articles cover a vast array of subjects, thus they are able to attract a good numbers of visitors from all over the world of each gender: male and female and of each age: kids, youngers, adults and olds.

Since I spend a good amount of my time in finding interesting topics for articles, then making a strategy and frame out for each article what should be included so that article readers get satisfaction after reading a article. 

Because, as mine, the time of a reader is also very important. As an author of an article, I always have the time of reader under consideration during planning, drafting and publishing an article. 

I, as a website developer, besides my time used, have to pay many costs including the costs of domain names. 

The domain name registration providers companies are increasing the cost of each domain name every year, so each year I have to pay a good amount of money to domain registration company only for domain names. 

For covering these costs, I have joined google AdSense program and inserted the AdSense codes in the html script of each website. 

Google display its advertisements on each website through these codes, even these advertisements appears with the texts of the articles. 

Moreover, this is the google AdSense technology, and google technical peoples know very well to develop advanced technologies to delivering the advertisements to end users. 

I do not have any role in AdSense technology, even I cannot edit the codes. 

Next popular approach to cover the cost of all these requirements is joining affiliate programs. 

I joined several Affiliate programs but as much as I understand through readings on internet that Amazon affiliate program is on the top of all the affiliate programs. 

So I joined this also and I am with them from long time. 

Some time Amazon has closed my account due to inactivity because no one did purchase, as reported by the Amazon Affiliate dashboard, or the amount of my earnings through product sales commissions was 1-2 euros and Amazon closed the account informing me T&C by email. 

Since I did not reach a threshold of 100 euros which is, according to the Amazon T&C, one has to achieve to get payment, so I lost earned money, as much as I remember. 

Moreover, I was looking what I have to do so that I should not have to log in my Amazon affiliate account but I would be able to insert amazon product link with my amazon affiliate tag in my articles. 

As a general rule, if a product link is not tagged, you do not receive any commission if some one buy clicking the product link which you inserted in your article. 

However, my interest was to avoid to log in the account, but able to insert the link in such way that the reader reach the product page on Amazon website. 

Tag is already included perfectly in the link and validated through Link Checker tool so that I can receive the commission. 

After several edits, attempts and spending many hours in investigation to know how to do it, I created one: 

https://www.amazon.com/s?k=Orchid&tag=latestfotocom-20

In this Orchid is a product, which I can change according to the products mentioned in my article. 

Suppose, I write an article about How to learn French language. In this case, I have to replace the word Orchid with French Book. 

Now the link will be:  

https://www.amazon.com/s?k=FrenchBook&tag=latestfotocom-20

It is good that Amazon affiliate account provides a Link Checker tool which can be used to check the edited product links. 

In my case, it is https://www.amazon.com/s?k=Orchid&tag=latestfotocom-20

I copied and pasted the link in Amazon Link Checker, and click on Check Link. 

In few seconds, I read this message written red words: 

Fail: The link above was not tagged or was not a valid Amazon link.

Following you find the screenshot of this happening. 

Now I left my account as such for few minutes, then again I clicked on button of Check Link. 

This time, Link Checker tool showed me that my edited link is working. 

I read this message in green text. 

Success: The link tags to a valid tag or sub-tag for your Associate ID.

The above message will appear also if you click several times. 

It means either you leave it as such for few minutes or click several times till it shows a green text mentioning "Success" as written above. 

Below you can find the screenshot.

My Amazon affiliate account shows me that my posted links receive tons of clicks every month but there is no earning. 

And also I noted that the big numbers of clicks appears after every few days or every alternative day. 

One day or few days there is no click, then next day or after few days, it shows 100 clicks. 

It seems it is showing clicks accumulated than clicks received on each day. 

Below you can find the screen shot. 

There is no purchase and earning registered. 

Since the Link Checker of Amazon affiliate account seems not working well to check validity of affiliate links of the products, so it is always in doubt that the posted links are functional and clicks on those links are detected by Amazon affiliate software, and, thus, Amazon affiliate dashboard presents the correct data or it is faulty. This is in question?

I contacted and did chats several times with customer care representatives through my Amazon affiliate account, but answers are not satisfactorily. 

They always said me that the product link codes generated through Amazon affiliate account is valid and this Link Checker tool is for checking the links. 

No other answer I received even after I clearly explained them what is happening with Link Checker tool of Amazon affiliate account and they said me they understood very well the issue.