"password incorrect" on app store
Hi there. Recently did a factory reboot on a fairly old(2015 intel i7) macbook air, and when trying to sign back into my app store, I was prompted with the old "Apple ID or password is incorrect" in red. I am 100% percent certain it is the correct password, and my app store had worked fine before the reset. There have been no password changes or anything. I had also tried to create a NEW ID to sign in with(after about an hour of restarting the computer and trying again), to which I had received ANOTHER error, saying I couldn't do that at this time. I would love for someone to give me a tip here, as I really need to be able to use this computer, and can't afford another.
Thank you in advance :)
P.S I saw in a few threads that some people said to just log out and log back in, but I am not CURRENTLY logged in, so that wouldn't help.
iPhone 12