Ok, so please bear in mind that this is an old, closed thread, Install and connect Nextcloud app to your /e/cloud drive to unveil its true potential. IMO both the first and last post are still accurate, but as others have found, you can get into difficulties where it is difficult to perceive where the two slightly bits might interfere.
As already said, follow the advice of @petefoth in the final post.
Do you have Nexcloud on your PC ? I do not necessarily recommend this – but it might give you another perspective.