The workaround to when the ports used for remote access are blocked by the ISP/broadband provider or by the router’s firewall is to change the single bay/single drive My Cloud’s Cloud Access Option from auto to manual (My Cloud Dashboard > Settings > General > Cloud Access > Configure) and configure alternate external ports. Then set port forwarding rules in the router’s firewall to forward those new external port values to the My Cloud.
Some more information on using the manual option and port forwarding can be found at the following post (while for a first gen single bay My Cloud, should be similar for a second gen single bay My Cloud).
