Is Parallels a Linux OS? I've tried running B4A under Ubuntu 20.04. At first it was Ok with Compile&Run to my Blackvew A80 Pro phone. Then suddenly it came up with:
adb.exe F 03-18 13:05:16 262 263 sysdeps_win32.cpp:2908] _wenviron is not set, did you link with -municode?
Has that happened to you?
PS Using B4A-Bridge, B4A connects Ok to the phone with Tools->Connect: first time I ignored the funny message about 'Ping failed' and 'ip Address is most probably incorrect'.