Aquaris-dev is a group of independent Android developers whose members voluntarily work on bq Aquaris devices as official maintainers of the LineageOS Android custom ROM. We aim to provide the newest version of Android (LineageOS) for as many of the latest bq Aquaris devices. We contribute our work to the LineageOS project (previously, we worked on CyanogenMod).

I did the backup using TWRP, transferred it to my laptop, wiped the device, sent it in, got it back, copied the backup to the phone, restored it and... Was locked out of the device, it would not take my password anymore. Well, it seems that happens, just delete some files and it will be fine.