I'd reply and explain to the app reviewer that your login works based on location/country, and attach a video showing a successful login of your app. In the future, I would explain the location based login in the 'Notes' section of 'App Review Information' when submitting a new version of your app for review. I'd attach the video showing a successful login in the 'Attachments' section as well.

If anyone has any insight, please reply! Thanks for reading my post

Still an ongoing issue as of October 11, 2022

After 2 months, I was able to get an answer on what Apple considers to be a highly regulated industry. It turns out the examples listed in 5.1.1(ix) - "highly regulated fields (such as banking and financial services, healthcare, gambling, legal cannabis use, and air travel)" - are the ONLY industries that Apple considers to be highly regulated. Apple does not consider commercial fishing to be a highly regulated industry. This is extremely misleading. I submitted feedback requesting this be clarified in 5.1.1(ix) of the App Store Review Guidelines. If you experienced a similar issue, I suggest you do the same here: https://developer.apple.com/contact/app-store/ and select 'suggest a guideline change'.

I am not part of the App Review team, but the only accepted way to use a customer service flow (like contacting the user support desk) for account deletion is if your app is used in a highly regulated industry. I was told by App Review that the fields given as examples in App Store Review Guideline 5.1.1(ix) - "highly regulated fields (such as banking and financial services, healthcare, gambling, legal cannabis use, and air travel)" - are the only fields that Apple considers to be highly regulated. As long as Apple considers insurance to be a financial service, I would think that your plans for account deletion would be acceptable. I'd email Apple directly to confirm just in case.

My post was restored. Thanks everyone for their replies