The problems I described eventually happened again after 3 days or so. I got pissed, so I decided to RMA the drive and ship it to Denmark where the store I bought it from has its HQ. As a temporary solution I formatted the laptop’s original HDD, put it back and installed Ubuntu Server. A bit of setting up and now things work. In the meantime I won’t be running NextCloud though, as the drive’s only 250 GB.
The problems I described eventually happened again after 3 days or so. I got pissed, so I decided to RMA the drive and ship it to Denmark where the store I bought it from has its HQ. As a temporary solution I formatted the laptop’s original HDD, put it back and installed Ubuntu Server. A bit of setting up and now things work. In the meantime I won’t be running NextCloud though, as the drive’s only 250 GB.