Problem solved. After several days of struggling here is what finally solved my problem.
By wanting to generate the project file as Evil_Pee suggested to me, I realized that I did not have the generate visual studio project file option in the windows context menu by right-clicking on the game exe.
To fix this I followed this forum:
(Don’t forget to run the newly placed ‘UnrealVersionSelector’ once after I set the new association)
The option in the context menu finally appeared. I can again use the epic game launcher to launch my projects.
But the generate visual studio project file option was giving me an error. So I installed visual studio 2019 in addition to the 2022 that I already had.
Despite this I still could not generate the project file with visual studio. On the other hand, by launching the project from the epic launcher, the project opens. I relaunched a packaging with the plugins activated and finally it worked.
Hoping that can help. Thanks a lot for the help.