When you are using Redis on cloud services, different providers may have their own restriction configuration. Any problems suffered please submit on our Github repository.
According to Connect to the Database on Digital Ocean , those managed databases are encrypted with TLS/SSL. Please follow connection format as below:
Host: xxxxx.db.ondigitalocean.com
Port: xxxxx
Username: (leave it blank)
Password: your_password
[x] Connect using SSL(without key file, cert, ca cert)