The groovy cloud will start to be shut down starting September 30. At some point after that, your current virtual switches will probably stop working. ( unfortunately, we haven’t been given full details yet.)
There is a substitute available now that will work on the new architecture, but that one requires that you have a hub.
I have been asking formally since December 2020 what options for virtual devices will be available to those of us who don’t have a hub, but no one has given me an answer yet.
So I’m just not sure what’s going to happen. I know if you buy a hub, you can use the new virtual devices. But it doesn’t seem like you should have to just for that purpose.
You can watch the following official announcement thread and see if we get an answer about virtual devices there.