[need help giving players access to warps]

on my private survival server i have set a few warps and need help giving players perms to access them. i have luck perms installed but if i give them access to essentials, bukkit, etc they still dont have access to warp. any thing i did wrong?

[Why is my server so laggy]

My server has three people on it and its a free server btw and the lag makes it unplayable, none of the redstone contraptions work and i cant mine or place blocks, it happend recently to so idk what would have caused it, i have all types of lag clearing plugins enabled too, is there anyone who knows what might of caused this?

[My server is insanley laggy and i have no clue whats causing it.]

My server has three people on it and its a free server btw and the lag makes it unplayable, none of the redstone contraptions work and i cant mine or place blocks, it happend recently to so idk what would have caused it, i have all types of lag clearing plugins enabled too, is there anyone who knows what might of caused this?

[Is it possible to host a server on old versions? specifically old beta 1.7.3]

me and some of my friends want to play minecraft beta and would like to know if its possible to host one. A response would be much appreciated.