I can't complete my Apple Account

I just bought an IPad and created a new Apple account, and everything was going smoothly until I tried to install something in the App Store. It keeps telling me to review, and then brings me to a screen where I need to accept the terms and conditions. I click on agree and then next, and then the button grays out and I wait. I looked it up and apparently this is a fairly common issue, as I've followed multiple tutorials.

Everything I've tried I have turned on my location services and given the App Store full access to them, I've entered my payment method along with my billing address in the settings, I've signed out of my Media and Purchases in settings and then logged back in through the App Store, I've even tried to log in to my Apple Account through Apple Music on my Android phone and enter my details there, where I am slightly more successful; however, I still only get as far as confirming my payment and billing info before that same grayed out next appears on that screen.

After a while of troubleshooting, I eventually contacted Apple Support, got as far as a few questions, and then once I was told to try restarting the App Store and seeing if the issue was solved (it still wasn't), I went back to report to the support agent, and the chat ended without me ever getting a resolution.

I could try contacting support again, but I'm hesitant to reach out after the last experience. I'm only posting this here, hoping that someone has some kind of hail mary for this situation, because I honestly don't know what else to try.