I lost my jobs in easy and i don't know how or why

1. If you have your two jobs that you had previously- Yes, my jobs and xp levels are back to normal.
2. If you have more than two jobs- No, not when I logged in.
3. If you only have two jobs, can you join a 3rd job or not?- Yes, you can actually join as many jobs as you like which you can get money an xp for as opposed to the previous 2 job limit.

 

Can you get more than two jobs by the signs and the /jobs join command or is it only one or the other?

 

Once you have two jobs, you can not use "/jobs join (job name)" It will say "You have already joined to many jobs"

If you right click the job join signs though at spawn, you can join as many jobs as listed on the signs.