How to regain old groups on new device

Hello, I hope whoever reads this message is well!  I’ve been experiencing an issue since before Christmas and I have no idea what to do. When opening Instagram the app, it always tries to get me to update my email address. After doing the app states I won’t have access to some settings for a few days. This has been going on since December, I’ve tried updating my email address on multiple devices to no avail. (See photos) Any guidance/help would be much appreciated. Thank you! 

I can get into Yahoo but it acts weird, and it puts me in a sign-in loop whenever I try to go into a set up e-mail from another site. It used to work on this very same computer, but now, even though I'm already signed in, it just keeps asking me for my password, and none of its supposed help works. I've even gotten the following message: "Uh-oh... We can't get sign you in on this device. Please try from the device you use most. And this is the only device I use. It's very frustrating. I've seen others post this problem, but no solutions.

Hello,

AOL's help doesn't work for this message. How can I get help. I clicked on forgot password, then got this.

Thank you.

Hello, I am getting  "you need the official whatsapp to use this account android" when i try to login in WhatsApp using my number. I downloaded WhatsApp from official Play Store. I even tried downloading apk from official website and installing. I even formatted the phone and tried again. Still i am getting same results. I tried contacting WhatsApp support but they are saying to use official WhatsApp. If someone know how to resolve please help me out. 

Hi! I’m struggling so so much with this, and it’s driving me mad. Last night I used a third-party app to look at my insights and stuff, but soon after discovered that such apps aren’t always trustworthy, so I logged out, and uninstalled it. I’ve always been logged into my account from my phone and iPad, but ever since last night, I get logged out of one device if I log into the other. It’s never been like this. I was always able to be logged into the account from both devices simultaneously, no problems whatsoever. After I uninstalled the Instagram followers analysis app I changed my password in fear that the app had access to my account. I’ve changed my password again since then, am able to...