Did you get a brand new R2 version pro with the little antenna on the back?
I keep my antenna angled a bit so it hangs over the side, almost as if it was peering around the back of the simucube to get line of sight to the front.
I’ve read posts of people having issues that were solved by updating the truedrive software and firmware, are you on the latest version?
Lastly, I’ve heard of people with intermittent button presses not getting picked up and they said they solved that issue with a new battery in the Ascher F28.
Since the batteries are pretty cheap, I would start with that.
(If you’re in the US, it looks like amazon has them in 4 packs for $10)
(Battery type is ER 14250 for the F28V2) )