Those old plugins were installed and active. Now I understand what the problem was. The import and migration section only had a problem in Safari, where it didn’t display anything. I checked in Firefox, and there was an import option from kk star, and I did it. Thank you.
I have several sites that have had one of the two plugins above installed on them for a long time. I have now installed your plugin and want to migrate it, but the migration section in your plugin cannot recognize those plugins!