Server packet size issue

I posted here (on forums) maybe a month ago, and so far haven't gotten any signs of this mod being added, so therefore I cannot make my server. Basically, I cannot log on my server (server is 1.18.2) without getting a message about the packet size being too small or something like that. The server is firm on 1.18.2, and I'd like either a replacement mod on aternos or to add https://www.curseforge.com/min…/xl-packets-renewed/files . Thanks for reading.