Thanks for the replies.
I updated the check requirements file. It did activate without the minimum requirements error but when I go to Tools -> GeoIP Lookup I see the following warnings:
Warning: Illegal string offset ‘set_css_country’ in “..\plugins\geoip-detect\views\options.php” on line 52
Warning: Illegal string offset ‘has_reverse_proxy’ in “..\plugins\geoip-detect\views\options.php” on line 55
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Oh, The IP Detection Lookup looked ok. The warnings only show up when I go to GeoIP options.