my remote control is working only sporadically for about a week now. After every 20th button press - only a rough guess - I have to hit a remote control button 10-15 times until it is working again for the next 20 (or so) button presses.
I got my Vero 4k+ and remote control about 4 months ago.
It looks like you might need a new dongle. You can contact support@osmc.tv with order details and we can send you a new one.
You will need to pair the existing remote with the new dongle. This can be done by holding Home and OK after disconnecting the old dongle when you receive the new one.