Hi @yassylindsay, welcome to the community.
Sometimes you get logged out of Klaviyo in the background, so may want to open it up in a new window or tab and log out and back in again. I notice Klaviyo tends to log me out every 24 hours, so if you left a tab open on Klaviyo, it tends to get “stuck.”
Another suggestion is to check Klaviyo status page here:
https://status.klaviyo.com/
It doesn’t happen often, but on occasion, you can see if there is some maintenance issues going on, or some type of bug or issue on Klaviyo’s side that might be impacting you.
The last thing I would mention just in case, is to make sure you’re not logged into more than one Klaviyo account at a time (per email address). And by the same measure, also make sure you’re the only one logging in with your credentials. If you have a colleagues or others that need access to Klaviyo, make sure to invite them separately with their own account.
Let us know if that works!