For Wifi assume good (not ideal) signal and for Ethernet typical 1gbps 15m cable

Firefox (July 10th version) When I type email and password and click "Login" button I get "Logged in l" notification and it returns back to post. Except Im not logged in.

Logging works with Opera and Jerboa app fine.

I changed password, but it still doesnt work

Currently Im using Google's and Xiaomi's services to back up phone. I want to use more private method: store backups on pc instead of cloud. I specifically want to save:

• Contacts
• SMS
• Documents, Music, Gallery, Screenshots, Downloads file folders

Is there any private method?