Help, game freeze

Hello guys, I am a new player, just play this game for 2 weeks.

Every time I farming, I sell the unneeded mats in guild bar npc, but now it will freeze the game if I sell to the guild bar npc. It is not crash or anything, it just freezes with the loading symbol, and it doesn't matter if I sell one stack or all of items in my inventory.

My internet connection is stable and I tried to sell to Adala in hora diomedea, and everything seems ok, no freeze at all, but if I go to guild bar and sell there the game will freeze again with that loading symbol. What should I do to fix it?

Edit: It only happened in international world 1, i tried to sell in guild bar npc in international world 2 and no freeze but when i comeback to international world 1 and sell, the game freeze again

 

Server issues int 1 are always populated by many ppl including bots so theres always server hiccups

 

Guild functions are getting bugged a lot lately.

First it was just the Int 1 chat, then the guild storage, then the guild store.
There's also a time where Int2 chat bugged as well.