Experiencing the same issue.
I have tried practically everything - mounting using GUI, using command prompt.
After mouunting the drive (SMBv1) and asking the credential store to remember credentials (or using persistent) the access is working fine.
But once the PC gets restarted is is kind of random behaviour.
- No way to access - getting error message that the drive is unaccessible
- Before accessing the drive it has a red cross but it actually shows the folders and files after opening
- It asks for Username and Password even when I ensure that credential store actually knows the credentials and they are correct.