So here's the thing... I work on a mac. In the "Library -> Application Support -> Adobe" is my "Plug-Ins"-folder, where NIK Plugin etc. are installed. They are NOT within the subfolder "Adobe Photoshop 2020".
After updating to Adobe PS 2021 all these Plugins do not show anymore in the filter menu resp. for the NIK Collection are no longer accessible in the automatisation-menu.
There's nothing to be copied from 2020 to 2021, because the presets are outside of these folders (one level higher). Worked perfectly fine for all previous versions and was recommended to avoid exactly what happened now - the plugin is missing in the newest version.
Any hints/ideas how to get them all back to work without installing them again?
I'm not sure if this helps but I got it working and searched for folders. Here's a copy of the path. They appear in the Google folder. I thought they used to appear in Plugins when using PS but they now appear in the Filters munu.