How to stop getting notifications from a different account on Instagram?

A friend of mine logged into her Instagram on my iPhone and when I logged back into mine, her notifications were popping up on my phone still. I have tried logging in and out of my account several times, deleting the app, restarting my phone & even rebooting my phone all together. Nothing is working I'm still getting her notifications!

=D

Don't know if this will help you or not but i got an account with 6, 000 thanks to this Youtube video

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