MarianaBG
I'm a little confused. You said you used XS++ to reset the phone lock? How did you do this? Also, what provider were the phones branded for originally? You need to do a SIM patch unlock usin SETool in order to use another provider's SIM. De-branding a phone does not unlock to all providers. You must do this seperately. Also since you create a patch unlock using the firmware file, you can't use the Wotan file. If you create a SIM patch unlock from a different firmware version than the wotan firmware version, it will most likely not work.
When you reply, please clarify when you use the term "lock". There are many "locks". There is a SIM security "lock" which requires a pin, a phone security "lock" which requires a pin, and a carrier "lock" which allows you to use other carrier's SIMs in a phone.
If I have mis-spoken about the info above, I apologize. Please feel free to correct me.