[Resolved] Multicurrency changing quantity on cart page change display to default currency.

Hello There,
Thanks for contacting WPML Support.

I understand the problem you're having. In order to reproduce the issue, I set up multicurrency on my development setup and added a product to the cart after selecting the secondary currency. Upon changing the quantity from the Cart page, I noticed that the selected currency remained unchanged. The same currency shows even when I adjusted the quantity or carried out any action that initiated an Ajax request.

The problem you're experiencing could be due to a conflict with another plugin. Given the plugin you've identified as a potential source of the problem, which is "Tiered Price Table for WooCommerce", please note that it is not included in WPML's compatibility directory. You can also check here: https://wpml.org/plugin/

If the issue is resolved by deactivating the plugin, it would be advisable to contact the plugin's support team to report the problem. If the issue is related to their plugin code or configuration, they are likely to offer more specialized assistance in this matter. Hope you can understand.

Let me know the update, please. I will be happy to help if you need further assistance in this matter.

Best regards,
Prosenjit

Hello David,
Thank you for the detailed instructions.

I checked using the standalone version of the WooCommerce Multilingual plugin and have successfully replicated the problem. The ticket has been escalated to our second-tier team for a more in-depth investigation. I am hopeful that they will soon identify a resolution for this issue.

During the investigation, I found that the issue doesn't occur when WPML is activated on the site. As a temporary solution, you could activate and set up the WPML plugin. However, if you prefer to keep WPML deactivated, an alternative fix is to edit the Cart page and switch to the "Classic Cart" (refer to this screenshot: hidden link), which also helps to solve the issue.

Rest assured, as soon as I have more information on this, I will surely inform you.

Best regards,
Prosenjit

Hi David,

Thank you for your patience. Our 2nd tier team has investigated the matter and identified a potential solution. To implement this workaround, please follow the steps outlined below:

1. Access and modify the `functions.php` file within your theme's directory.
2. At the end of this file, insert the following snippet of code:

   add_filter( 'wcml_user_store_strategy', function ( $strategy, $key ) {
       return 'cookie';
   }, 10, 2 );

3. After adding the code, please ensure to clear both your site's caches and the cart.
4. Add a product to your cart in a different currency and then try to adjust the quantity. The issue will not happen again.

I tested the solution and it worked perfectly in my development environment. So, please test and let me know the update. I will be happy to help if you need further assistance in this matter.

Best regards,
Prosenjit