Problems with Mounting

Hey there, i’ve got a problem:
I’ve got the Nextcloud on a Synology NAS. I also can mount it on the Windows Explorer, but when I restart the computer, the computer says that this directory is invalid.
Can anybody help me please?

Can you check the webserver logfiles, which folder Windows tries to access. Also note that webdav-support in Windows explorer is a bit limited:
https://docs.nextcloud.com/server/9.0/user_manual/files/access_webdav.html#known-problems