I have last month with support of mamba (many thanks once more) the module wgTransifex updated to new API 3 of Transifex. I thought after updating that everything is working fine as I got no errors when downloading the projects, resources and translations.
Now I realized that some features are not supported anymore by Transifex, but the API delivered an empty string instead of creating an error, e.g. categories for resources.
For most of the features it is not really a problem. But I detected a real problem: running download of the translations via normal API request is still working, and most of the parameters are provided, but not the translation itself. Transifex provided only an empty string.
Transifex supports download of the translation now only via resource_translations_async_downloads. Therefore only empty files were generated :(
The current version of wgTransifex is now downloading all.

If you have some other findings please let me know.

If you are using wgTransifex please update to last version on https://github.com/XoopsModules25x/wgtransifex

Sorry for any inconveniences

I found another new problem with resource_translations_async_downloads: the download contains only the translated line. Line like comments from original file or PHP identifier are not downloaded, therefore PHP file can be incomplete.
I will work on a solution and inform you