ATC custom call sign and flight number no longer work,Is everyone ineffective or a personal problem?

[DementedCorn327]

Check out this post, maybe same issue/solution:

ATC only using calling on the ground, uses manufacturer in the air

Right, I’ve now reverted the config file of my PMDG 737-800 Ryanair livery and surprise surprise, with the rolling cache off all is well. The thread I read suggested that with the ORBX UK Mesh enabling the rolling cache caused problems. Since I disabled the cache I haven’t had a connection drop and the callsign problem has now gone away. I think the connection drops were causing the callsign problem, and the rolling cache was causing the connection drops. An annoying circle of errors! I guess …