IP Address Blocker

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Was attempting to block an IP Address through the Dashboard. Even though I was inputting the IP address into the field, I noticed that the same IP address was still visiting the site. Messing around with the buttons in this IP Address blocker somehow blocked my own IP Address. I didn't input my IP address so not sure how that happened. Besides the fact, how do I get in as admin now? Any help would be appreciated.
Thanks
Mr. Greenhorn