Can't help you, sorry :((

@Solla-topee Thank You for yr.reply.

@paulo.cotta That FW version (4.0.4 Build 20201023 Rel.31224) was available in January 2021 on TPLINK web site for the TL-WPA4220 (V.4) but now (really don't know why but I hope in a clarification...

@VfV Dear I noticed the same thing. Did u receive an official answer from TPLink? I've actually installed that firmware on my devices, while today I noticed that firmware is not more present on...