If you are experiencing connectivity issues when using a WiFi connection then it may be the required port is blocked by your router. You will need to allow access to port 443 in order for the application to be able to connect with our servers.
You can find some helpful information in regards to this topic on the following website:
If you require assistance making this change then please contact your ISP (if they provided you with the router). Alternatively, if you purchased your router independently, then please contact the manufacturer for more help.