I have the same problem here (if it’s a problem at all!).
I have UR242 and UR44C interfaces. First connected to desktop and second - to the laptop for a mobile studio equip. So both interface bundles have license for Basic FX Suite. First - in a dongle, second - in the Soft eLicenser.
People, you misunderstood something. The licenses are for the plugins that are installed into the computer. The FX modules inside the interface don’t need any license. Read this: Steinberg Licensing on Basic FX Suite - #31 by steve
Next. The slot of interface FX in the Input track uses the interface from the UR Tools, not the plugin. So it also don’t need license (just checked this rigth now).
So for sure the only situation when you need license is if you use those FX plugins in your projects. Of course this is inconvenient if you need to redo your old projects and replace FX plugins with stock plugins that come with Cubase. I also have old projects where I (accidentally) added REV-X plugins. It’s not serious.
For best studio quality you will use more serious plugins. REV-X is good for live sessions. But for live sessions you don’t need any license because you use FX modules that are inside the interface.