How can I resolve 'invalid-request' error when logging into Abbott Lingo app on iPhone 14?

“Update: the app owner advised to reset the iPhone settings, (not factory settings) which worked! The only downside was I lost some settings such as font size etc and I had to set up a new passcode but that was a minor inconvenience. I still had all my data and pictures etc intact. I’m happy I can now use this app!!”

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Confirm this is YOUR Device:

Log in here, and make sure this is seen in your account. If it’s not, then it is not your device, as of yet: https://www.icloud.com/find

"Thanks , software updated to latest (as an attempt to troubleshoot) and no vpn enabled. Same error:("

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Company-Owned Device:

Is this a company-owned device? If so, you might have restriction on this. So, contact the person who deals with these devices, asking them for a fix.

"How can I resolve 'invalid-request' error when logging into Abbott Lingo app on iPhone 14?: trying to log into new app for first time (Abbott Lingo) it keeps coming up with ‘invalid-request’ error. My email is correct. Rebooted phone. iPhone 14 updated to latest IOS. My partner has no issues logging on. Lingo support said it must be my phone. Any ideas??"

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Invalid Request:

There is an error connecting to the server(as a client) through your iPhone. So, the updates fixed this. It may have been a bug fix that was included with the update. Or, if you had a VPN enabled, that may have gotten in the way here.

"Thanks for your suggestion. It’s a personal phone not a company one. I have escalated further to the app owner and will see what they come back with. will post an update…"

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Excellent job troubleshooting this! Looking for ward to the followup.