Hello csar1106,
We understand that you're having some Instagram issues after updating. We'd be happy to get you pointed in the right direction!
If you haven't already, could you check to see if you have any available app updates for Instagram? How to manually update apps on your Apple device
If there isn't an update you'll want to try uninstalling and reinstalling the app: How to delete apps on your iPhone, iPad, and iPod touch
After deleting and reinstalling, if the issue continues you'll want to reach out to Instagram support for additional assistance: How to contact an app developer
Take care!