Hey there! Hello!
I can't answer your question exactly since I don't know what browser or computer you're using, but I believe that these general rules can apply to anything. I use Google Chrome on a MacBook, so it might be really different for you if you're using, say, Microsoft Edge on a Windows computer.
The first thing you'll want to do is locate the setting on your browser. In my case, that's in the menu in the top right-hand corner. See Attachment 1.
Next, look for settings either related to "AutoFill," "AutoComplete," "Automatic Passwords," or just "Passwords." It could be any of these, so find what pertains to your browser. In my case, this'll be "Passwords," which is different from AutoFill, which saves things like addresses and credit card numbers. See Attachment 2.
Finally, locate the information for the website in question. You should be able to clear this information so that it will no longer automatically enter it in for you. The website may not allow for you to sign in with automatically-filled information for your safety, or it may just not work with it properly. Either way, doing this might help. See Attachment 3.
Hope this helped you out, but I apologize if none of this applies to you. If you want to tell me more about your browser type, I would be willing to help you out further. Otherwise, feel free to ask me any additional questions if you have any. :-)
