Problem adding to cart

Please post the link to your site.

Shop test with the removed superfluous: https://www.passion-mp3.com/test/catalogue/

I made new tests, it works for the first product added if I delete cookies. When cookies are installed that does it no longer works properly.

I made a test link:
https://www.passion-mp3.com/test/panier/?add-to-cart=1043
Every time I refresh the browser, a product is added to the cart, no limit.
Is this a fair test of the problem?

If it works for me but not for you it then maybe there must be something about your browser. Have you cleared your browser cache before testing? What browser are you using? Can you try another browser?

I use Firefox but I tried Chrome and IE too. I also did the test on another computer with Firefox, I get the same result.

That’s right, by testing directly with the link you created it works.

I try to explain better.

I go to the site, I selected the product #1 and add it in the basket with the add-to-cart button in the description. I go to the basket, the product is added.

I return to the catalog and I select product #2 that I added to the basket with the add-to-cart link in the description. Product #2 is not in the basket.

I disabled cookies and I couldn’t get anything to work, so I enabled them again.

I carried out the test you gave:

I select product #1 and add it to the basket with the add-to-cart button in the description. I go to the basket, the product is added.

I return to the catalog and I select product #2 and I add it to the basket with the add-to-cart link in the description. Product #2 is not in the basket.

For me, that was only partly true. On the basket page, Product #2 is not in the table of products. Of course it should be there. But in the very top row of the page you have a mini-cart. There, the basket value and the number of products is updated correctly. And if you proceed to checkout, the order review table shows the correct products.

So it looks like the problem could be rephrased as the basket page table does not update, even though in the background the cart is being correctly updated and shows correctly elsewhere.

Next I think you should look at the template for the basket page.

Have you got any functions in functions.php for your child theme that may be affecting the basket page?

Please can you have a look at Admin page > WooCommerce > System Status > Template Overrides row, are there any template overrides that might be affecting the basket page?

Could you try the test with the parent theme activated, and also with the default TwentyFourteen theme, and see if the problem remains?

So it looks like the problem could be rephrased as the basket page table does not update, even though in the background the cart is being correctly updated and shows correctly elsewhere.

Okay, but for the client that tries to add products to their cart that does not change his problem, he does not understand what is happening ??

You can view, I activated the theme TwentyFourteen, no child theme, no change in functions.php file.

Here I still have the problem.

Copy of the system status on this page: https://www.passion-mp3.com/test/status.html

Between version 2.2.4 and version 2.2.8 will there have been changes in the management of cookies?

Did you test with all plugins deactivated except WooCommerce?

Remained WooCommerce Shortcodes, I just turn off too.

There are hardly any parts left in your setup. Its possible that WP, WC or 2014 has not installed properly or is corrupted.

Consider wiping the lot and starting again with fresh downloads of everything. You can export your content from the current site and import it into the new. Not a very elegant solution, I know, but otherwise I’m out of suggestions.

So I deleted and replaced all the files WooCommerce and WordPress, it works now.

I should start there. It’s a shame to lose so much time for a simple update.

Thank you for your help.