How do I fix Instagram login issues on iPhone 16 Pro Max since January 2025?

Hey community,

Since Jan 2025, Insta’s been acting up on my iPhone 16 Pro Max. Checked a second account, phone shut off, came back on, then password issues started. Even after changing it, still says it’s wrong—email too.

No word from IG or devs, Apple support was no real help. It’s April now, still stuck. Friends say resetting won’t fix it either.

Anyone been through this? Any fix? Would really appreciate the help. Thanks!

[Re-Titled by Moderator]