Hi !
As suggested in plugin manager, its time to update envira gallery ==> but I got a timeout error / it doesnt works… Should I wait for an update from yours ? Do I have a bad issue ?
If you are already updated your latest version of X theme, you can remove the envira gallery then reinstall it again in the plugin adds on page.
Timeout means you need to increase your memory allocation. Please contact your host regarding this issue because some hosting does limit manual memory increase.