Connection and feed issues

Good afternoon, appreciate any help you can offer here –we’ve exhausted all of our options and need a little insight. Simple version: Instagram feed stopped updating, followed the typical approach (clear cache, reconnect, etc). When trying to reconnect, the process would just sit there for hours on the callback to the website. So we started to investigate, and now I’m here 🙂

Prior to this point:
– Disabled security plugins, cleared server cache, tried to reconnect, hangs on “connecting”; disabled browser plugins, disconnected in the Instagram account, etc. Never gets past “connecting”
– Tested with a different instagram account, no issues
– Tested with a different plugin for feeds, WORKED with the account we have an issue with
– Tested again with the same account with Spotlight, hangs
– Tested on two different computers, two different internet connections, hangs
– Tested with the main connection approach and tested via the create a token approach; no change
– No errors in the network tab or console log

On a test site:
– Deleted the feeds, account, deleted the plugin, cleared the DB of all references to Spotlight, cleared server cache, disabled security plugins
– On the Instagram account, removed website/application access; checked all notifications, security settings, etc for any warnings, alerts, “is this you?” etc.
– Attempt to connect fresh, same outcome
– Again, it shows up in Instagram as connected, but the Spotlight popup will sit for hours on “connecting”
– I tried again with the “create a token” method instead and did a video recording and caught something
— There’s a brief-brief moment from when you click “allow” where the console shows “Error with Permissions-Policy header: Unrecognized feature: ‘attribution-reporting”, and Error with Permissions-Policy header: Unrecognized feature: ‘shared-storage’ and Error with Permissions-Policy header: Unrecognized feature: ‘shared-storage-select-url’ and “The Content Security Policy directive ‘upgrade-insecure-requests’ is ignored when delivered in a report-only policy.”
– After that, the popup goes to the “connecting” screen and just stays there

If it helps: This Instagram account is a business account (double checked) and it’s an 18+ account because it has alcohol. That was our first guess as to the issue, but apparently it’s been setup for months without an issue and other social feed products (that we don’t like as much) don’t have the issue. So we’re stumped.

Appreciate any help you can provide. Thank you!