Hello there!
What you are reporting is normal. When we place a new installer on our download page, we don't immediately change the automated update check to force customers to update. We do this deliberately so the update is rolled out in stages. Only when we no longer support a Lansweeper version will we raise the version of the automated update check. The fact that you are supposedly on a higher release than the latest official release is not a problem, as releases available on our download page have gone through QA and are safe to install on your production environment.
You can update to the latest Lansweeper version by following the steps in this guide: https://www.lansweeper.com/knowledgebase/updating-your-installation/
If needed, you can always check our changelog to see all the additions, changes, and fixes that have been implemented in the Lansweeper software: https://www.lansweeper.com/changelog.aspx
The latest Lansweeper installer can be found here: https://www.lansweeper.com/update-lansweeper/
The latest LsAgent installers can be found here: https://www.lansweeper.com/download/lsagent/