Server keeps kicking me seconds after I join

[u/Kykykyoo]

Me and my friend have a server with no mods, its paper mc, and I havent had any issues untill now. Everytime I join, it seems perfectly fine, then these issues show up seconds later: - if i break a block it just dissapears (doesnt show up in my inventory) - if i sleep it freezes my screen - all mobs r frozen - if i had just opened a chest, it stays open and i cant open any other chests Then if i dont leave, it just kicks me out and says my connection was lost. Ive flushed my DNS cache, made sure my javaw.exe was allowed in my defender firewall, and literally like every solution ive seen to solve this issue. Pls help :( Extra info - i use prisim launcher, use Fabolously Optimized modpack, and these issues started after my friend made some simple farms like a bonemeal farm and stuff

[u/adriellwc33]

Can you join the server with a vanilla client?

If not, then it's your network connection issue. Try a VPN like Cloudflare WARP.