Yep I have exactly the same problem. It looks like that problem occured already before... However, it got fixed after while.
Hopefully this applies to the current problem as well.
In addition I must say, that the Tower #1 and #2 doe unfortunately cover bothe only 118.1. The frequency 120.225 (which is the main freq. for landings in the prime time) is not covered for whatever reason.
The radar frequency on the otherhand is always running. Howerver, most of the time you only hear the pilots, which makes it useless.
These are my excperiences