This thread is resolved. Here is a description of the problem and solution.
Problem:
You have installed WPML on your site and are experiencing intermittent unavailability of the REST API. The REST API becomes unavailable across the entire site for about one minute, then returns before going offline again for a few minutes.
Solution:
We have identified that deactivating the WPLoyalty - WooCommerce Loyalty Points, Rewards and Referral Pro plugin resolves the issue. This plugin is currently not compatible with WPML. We recommend contacting the plugin author for more insights on the issue and to check if they can provide a solution. Meanwhile, if the plugin author indicates any direct relation of WPML to the issue, please inform us.
This solution might be outdated or not applicable to your case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the issue persists, please open a new support ticket at WPML support forum.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.
This topic contains 5 replies, has 0 voices.
Last updated by 3 weeks, 2 days ago.
Assisted by: Lucas Vidal de Andrade.

