I’ve just installed the 1.13.2 update this morning and the servers are online with no known issues. Some plugins needed to be updated and it is possible that we may have missed some, so if you have an issues with the 1.13.2 update please report them on the forums in the bug reports section.
Dynmap requires an update to work with 1.13.2, so it is currently in the process of purging the world data so that it can re-render the map with the new version. Until this process is completed Dynmap probably will not work. This process should take a couple of days to complete.
Also, please note: you must use 1.13.2 to connect to the server now!