Internet connection problem?

I obviously have internet connection since I am able to write this review, however, when I want to add my booking to the app, I type in my record locator and last name for the flight to Ams tomorrow, and I get a response showing the WiFi signal and text that says: "we cannot update the app due to a problem with the internet connection"???
What am I missing here?

evike45 about KLM - Book a flight, v7.4