Error contacting the server (ipad) (server certificate invalid)

Cannot login on ipad to Navigraph. Actually, can’t get past this initial error pop-up reading:

“Alert”
“There was a problem when contacting the server. Error description: The certificate for this server is invalid. You might be connecting to a server that is pretending to be “charts.api.navigraph.com” which could put your confidential information at risk.”

There is only an option to click OK and then it will just show a blue background.

Hi…,

Welcome.

Try removing and reinstalling Charts iPad. If error still occurs please post screenshot showing error using Guide to posting Screenshots

Cheers
Ian