Not my server but I found it's L2OFF and I think worth to have some fun on it

https://l2frozen.club/
Open Date: 17-January-2020

RATES
Exp/SP: x25
Adena: x12
Drop: x10
Spoil: x8
Seal Stones: x8
Quest Drop: x3
Quest Reward: x3/x4
Manor: x1
Raid Boss Drop: x1
Epic RB Jewel Drop: x1

ENCHANT RATES
Safe Enchant: +3
Max Enchant: +16
Normal Scroll of Enchant Chance: 56%
Blessed Scroll of Enchant Chance: 60%

GAME SETUP
Server Platform: Official PTS Files
Maximum Clients per PC: 3
Windows 10 Compatible
1Hour duration on all buffs, dances, songs, prophecies.
Retail Buff Time on summon buffs.
Buff slots: 22(+4 Divine Inspiration)
Skills are auto learn.
Automatic pickup for monsters.
Manual pickup for raid bosses & epic bosses.
1st, 2nd class change for Adena on Class Master NPC.
3rd class change for Halisha Mark on Class Master NPC. (Dropped at Shrine of Loyalty area)
Sub-Class Quest is not necessary.
Mana Potions: 800 MP Restoration with 7 seconds cooldown.
20-Level Player Gap System has been disabled.
Cancel removes 0-3 buffs randomly.
Trade Chat (+) has global range and works with 5 seconds delay.
All Giants Codex, Enchant Scrolls & Life Stones are stackable.
Shift+Click on the monster shows you its droplist & chances.
100% retail Geodata with flawless pathnodes.


MAMMON & SEVEN SIGNS
Seven Signs Have been Opened since start of the server. You can exchange your seal stones on GM Shop.


AUGMENTATION
Skill Gain Possibilities depending on Life Stone:

No-Grade Life Stone: 1% Mid-Grade Life Stone: 2% High-Grade Life Stone: 5% Top-Grade Life Stone: 7%
Note: All Tyrannosaurus have 10% drop rate of Top LS 76 and High LS.

SUBCLASS QUEST
Attention, The Quest is not Required!
Attention, You are not Required to hit raid bosses just talk to the chest that appears after death the raid is enough to get the item.

In order to get the Subclass Status you will need:
- The 4 Scepters (Cabrio, Golkonda, Hallate, Kernon)
- 25,000,000 Adena
- Minimum Char Level: 75+

Note: Scepters are not tradeable/soldable, you can only delete them.
Note: The required NPC for getting subclass is located into Giran.


NOBLESS QUEST
In order to get Nobless Status, you will need to be subclassed already and complete the 4-Part Quest.

This seems pretty promising tbh.
Any donations? Also, is the owner known?

I played on their old x25 long time ago, about the donations I know there is for subclass,noblesse and other stuffs like Cry13 , LS, other consumables and C,B grades,runes, I did check some videos on youtube just now and I see competitive mid rate clans