I think after an OJS update the Custom Locale Plugin disappeared from the installed plug-in list.
If I try to install it, via Plugin Gallery": i search the plug-in and on the right it says “status: Can be upgraded”. When I click on the plug in name, I have a pop up windows saying: Plugin already installed and up-to-date."
This is the installed version of Custom Locale v126.96.36.199 released on 2020-10-13
and this my OJS version: 188.8.131.52
Someone have any suggestion about how to solve it?
Many thanks in advance,