Instagram DMs won’t be marked as read?

So on an Instagram account of mine, I am having an issue regarding DMs, and there are two parts to the issue

1. I am not able to see any new DMs from others

2. Whenever I read a DM that was unread before the bug took place, if I refresh the messages page, that same message returns to being unread, almost as if I didn’t read it in the first place

Here’s what I’ve tried so far:

-I restarted my phone

-I uninstalled the app, then reinstalled

-I cleared the app data of the app

-I turned off the WiFi, then turned it back on

-I changed my network to see if it was an issue with the network or the app. Still didn’t work

-I logged out of the account and logged back in

I am unable to check if I can access my DMs through my computer because this account is one that is affiliated with my main account (in other words, this account isn’t an independent account and doesn’t have its own password)

If anyone that ran into something similar knows what’s up, please let me know. Thank you.