Sub-GHz cannot use 433 frequency solution ! !!

Flipper zero has struggled several times for a period of time and found that Sub-GHz cannot use the 433 frequency in this region for several days, so I thought of changing the region to try and finally solve it perfectly ! ! !

this is probably why when i use my external CC1101 GIPO with the right antena i get night and day power/distance as checked with rfporta and rtlsdr