Login Error 0x00000001

I recently reinstalled the game after a long time of absence and I found myself facing this error. I have followed some suggested possible solutions to my problem that I have found on the web but still the problem perseveres. 

Strangely enough, when I joined with cellular data, the game connected me and I was able to play, connecting my accounts and stuff like that. Although when I re-enabled my WiFi connection, the game immediately disconnected and showed the same error once again. 

Steps that I have taken to solve the problem and failed:

Uninstall/ Reinstall

Check for Updates

Remove Cache data and relaunch

Force stop the application

Join with cellular data, then switch to WiFi

Check system requirements (the device meets the requirements) 

It's worth noting I am joining from Greece and I am not using a VPN

It would be really helpful as a returning player to help me find a solution. Thank you for your time