Hello @Oceanwatcher
Using ssh terminal log into your server and run the command
nano /usr/local/lscp/cyberpanel/rainloop/data/_data_/_default_/admin_password.txt || vi /usr/local/lscp/cyberpanel/rainloop/data/_data_/_default_/admin_password.txt
Thats where you admin password is. Use it to log in to snappymail admin panel