Reset account

Hello,
To try the plugin, i used an other Instagram account than I officially
like to use on my site. So I go to ‘settings’ use the Reset button and
try to Sign in again. But every time i do this, the initial chosen
account is popping up. And i can not get rid of it. Even when i
de-instal the plugin entirely and install it again, that initial
account is coming back.
Please tell me what to do.

Thanks in advance,