Hello,
it seems to me that the protection does not work sometimes.
The player who disconnected yesterday at 18:53 and is supposed to have 24-hour 100% protection according to the configuration, does not have it. The GUI window doesn't pop up and I can damage it. So I did a server.save and restarted the server. After the restart, another player lost protection, for a change it says that he is online, although he did not connect at all.

Configuration example:
{
"AbsoluteTimeScale": {},
"DamageScale": {
"1": 0,
"24": 0.25,
"36": 0.5,
"48": 0.75,
"60": 1
},
"Activities": [
"input",
"loot",
"respawn",
"chat"
],
"AfkMinutes": 5,
"ClanFirstOffline": false,
"ClanShare": true,
"CooldownMinutes": 10,
"InterimDamage": 0.0,
"MinMembers": 1,
"MinutesSinceLastAttackToProtect": 10,
"PlaySound": false,

And some players who have not been on the server for more than 24 hours still have 100% protection. They probably reset their status to online when the server restarts.

I am having the same issue. Did you find a fix?