For more details from Apple, click the Learn More. This is a warning that the app, in its current version, will eventually no longer be compatible with macOS - probably in the next major operating system release. This has more to do with Safari than LogMeIn but Apple has been warning plugin developers to update their apps for a while now. And, that is correct, the LogMein plugin does not work with MacOS Mojave's version of Safari. › Part+b+now+check+your+hypothesis+by+investigating+two+tracker+videos:+ball+drop+and+large+ball+drop.++open+the+tracker+experiment:+ball+drop+.+watch+the+movie+by+clicking+on+the+play+button.+(the+other+video+controls+allow+you+to+&ldquo rewind& rdquo +the+video+or+step+forward+or+backward+one+frame+at+a+time.).+watch+the+video+to+go+ahead+with+the+activity. After upgrading your macOS computer to High Sierra 10.13.4 or higher, you may see this message the first time you launch certain apps. The LogMeIn Client is terrible on the Mac, beachball, lockups and just slow.