I have the Sonoff RF Bridge R2 v2.2. I did the hardware hack, flashed the bin, added the device in integrations, and can see the data coming in on the ESPHome logs.
My Sonoff RF Bridge 433 ESPHome YAML looks like the below code:
I have a captive portal abd wifi fallback enable and static ip.
The output comes on the HA event bus and there is a service call to send codes too.
Edit: Ahh, it is the first line that has been moved out in the copy/paste action.
It should still work for R2.2, but R2.2 can not be patched with the Portisch firmware for the radio, so it might have some limitations on which signals it accept compared to the R1 with Portisch flashed on it.
I do not know if that is the case for your setup.