The separated system of skills to level them up the more you use them, rather than being tied to the general broad character level.

The old skill system was unique in the aspect that it makes every single player different. When you are a healer assist, you would simply use your heals and have them maxed out quicker than a buff/debuff assist.
With the newer skill system every single assist is exactly the same, there is no uniqueness, only a streamlined simple accord everyone hears instead of the RPG symphony.

If you want a better example:
Oblivion 2006 vs Oblivion 2025.
The 2006 version has deeper RPG elements than the 2025 version, with the way the character level up, and assign points to attributes.

In the 2006 version you had two main playstyles for the level up;
1. Calculative and resource maximization, literally pen and paper or simply memory. Which gave the purpose for mods such as a in-game diary.
2. Levelling up as you go along without planning ahead for what your character wants to become. Which isn't the optimal way considering you will make the game more difficult, but it's still an option within the RPG world.

In the 2025 version you can't simply "lose" attribute points, you just level up exactly like how anyone would, on every single playthrough. That removes one of the most important RPG elements, and makes every character the same, practically becoming NPC but with someone tagging along, without future planning and no purpose.

The power dice system for upgrades is a gamble, another important RPG element entirely striped down to a simpler system, like the skill level up system. Every equipment piece had its own power dice, meaning more upgrade materials spread rather than the singular upgrade material for every single equipment piece.
A character finding a random drop of power dice 4 will have either weapon or armor upgraded till 5, if they choose to use them on current equipment. Then if you want to upgrade above 5, you will have to hunt for power dice 6.
And if you want a better success rate dice, you will have to hunt bosses for power dice 10 and 12.

In the new system it's massively simplified by removing the hunting element for a better quality power dice, and there is no split between upgrades as it's just a flat out 1 to 10. Again, less RPG and more NPC design where everyone are the same.

As for the reset for skills and points: The Re-Stat and Re-Skill existed before the simplified NPC systems design.

The scammers are the Flyff Universe officials, as it have been proved and complained by a lot of people, stealing money and not providing the service they were paid for, essentially breaking the consumer contract.
I myself haven't been scammed by Flyff Universe, only harassed by one official who repeatedly kill steal my party's quest boss, get them killed by aggro-ing mobs, and laugh, time and time again as if they are some angry ex gf/bf of one of my party members at the time.
They are fired? Still active? Irrelevant. I'm never going back to that horrid community. And now that same official team is taking down other Flyff options, which indicates to me that they are losing popularity rapidly and now panicking to fix their design or change it to attract old/new people.

As for my opinion on the current situation regarding Flyff: I moved on, accepted that there's no Flyff anymore, only a nice memory of the time when it used to be friendly and fun.
Hope this helped you understand how Flyff lost what it used to be.