For all server owners that run modded server and have V+ installed only to be able to use bepinex and add more mods, i might have a solution for you.
When i started my modded server, a friend suggested to install a mod named ValheimMinus which will remove ValheimPlus but i will still be able to use bepinex.
After this patch i only needed to wait for some time so Gportal can update the game. Everything is working now and i didn't change a thing.