I tried several times to change the protection time to e.g. 3600 seconds.
When reloading the plugin, it always shows the 1800 seconds no matter what I put in the config.

Wait. Seems it works now. Had to delete the data file.
But it seems 2880 minutes are the most one can set, right?
Can you expand that?

Merged post

Wait. Another fail by me. Sorry. :D It's late.