Hi, (TLDR) but I have seen this problem even on ubuntu and some old printers with old smb protocol. This is what worked for me:
sudo mount.cifs -v -o "sec=ntlm,username=anonymous,password=,vers=1.0,nounix,noperm,rw,uid=me,noserverino" //IP_OF_DEVICE/memory_card ./mnt
You might need to zypper install some samba support packages prior using mount.cifs, maybe smbclient?, but I don’t remember them, sorry.