Linux client keeps creating new "devices"

Every time I reboot the client has kicked me out and I have to manually log back in. I then checked the account itself and it actually creates a new “device” for every time i login from the same device.

Another problem I experienced on one of my nexctlouds cloud-storage accounts is that I never received a confirmation e-mail to confirm my e-mail and now it asks me every time I start it to confirm the e-mail address.
I already tried changing the e-mail address to a different one and then back to the first one but it doesn’t send any confirmation e-mail.
The hoster I used is