OnTime has been updated (including Vault which it relies on) so it now uses UUIDs. All data has been purged due to this, because the plugin couldn't run and re-format the data in the old format. So I will have to manually move the old data over. I can probably do it by looking up all users' UUIDs but that would take some time. People can also log on, in which case they'll have 0 playtime. I'll then transfer your old playtime to the new file you generate by logging on. You can notify me here if you've logged on and you want it transferred. You'll lose any time between when you log on and when I transfer the time. After that it should work as normal again.
Akani's, Komrage's and my data has been restored so far.
#UUIDsWereTheWorstChangeEver
Just wait for LWC. Just wait. I'm not even going to look at that today.