Problem: Tell us what you are trying to do? Make a mobile menu with use of plugin WP Mobile . It synchronized for second language in some way, but don't know how, but colors are different on Polish version.
Solution: Disabling the WP Fastest Cache plugin makes the style of the mobile menu work fine.
Problem: I'm trying to translate strings related to Ultimate Member. One string is not translatable in Settings on the frontend of UM and other in Profile of UM on the frontend despite of the fact that it's translated in String Translation of WPML.
Solution: The Ultimate Member plugin is not fully compatible with WPML. There are still some issues and we are looking to work with the plugin authors in order to fix all the issues.
After migrating site from Polylang to WPML, Woocommerce products seems to be not linked in language relation, but in fact they are.
Solution:
This will be fixed in next release of Polylang importer. For time bing, please use this snippet https://pastebin.com/kHZecMKk (change language code 'pl' to the one which you are using for your secondary language products)
