There is nothing to solve and you should return the unit if you are not able to wait usually one week for the device to update to the latest firmware.
WD Support and all the knowledge base and forum discussions have shown that even if the new/replacement My Cloud Home (MCH) is able to open the required ports through the router (i.e., UPnP enabled in a compatible router), the new user may still have to wait up to a week for the multiple firmware updates to take place.
The MCH hardware has not changed in the 6 years since its introduction, but there has been at least 66 different firmwares available and update capable for the device. Only the last few firmwares are now usable for the MCH and most new/replacement MCH are old stocks using obsolete firmwares that must be updated several times before the device is usable.
