Instagram does not accept my correct password
I have over 13 000 followers on Instagram and can no longer log into my account.
I had to delete the app because it was getting slow and I wanted to do a fresh install.
After that, I could no longer log in. I have the correct password (which I never changed) but Instagram insists it is not the correct password.
I have logged in 20 times a day for months, and now I can no longer log in.
How can I get my Instagram account back?
Is there a trace of the Instagram password on my phone?
I have no idea why this is happening.
MacBook Pro with Retina display, OS X Mavericks (10.9.4), 512 Gb SSD, 16 Gb RAM,