Hi, I usually in the past format data, then reboot back to recovery (twrp) then do full wipe, dalvik, cache etc (full wipe) then flash the rom. The password issue is related to the data partition so normally a wipe sorts that problem out. Just bare in mind it will completely wipe everything but it's worked for me on many occasions. Please note do at your own risk, just have to add that bit you should already be aware when using custom Roms. Hope I've helped and please let me knowHi !
With this TWRP version I have an issu : it asks for a password because of encryption and my pin code doesn't unlock it as it does with 3.6.1 TWRP. Do you have the same issue ?
