Let's be clear, there is a 5.4 remote for 211s and a 54 remote for Hoppers and Wallys. Which one do you have:
View attachment 165371
This is the 5.4 remote for 211s.
View attachment 165372
This is the 54 remote for Hoppers and Wallys.
The 54 remote will not work for the 211. The 54 remote is RF and the 211 can't see that because it is an IR receiver only. The 5.4 is an IR remote.