Person on spark appears to be offline

Hello,

We all use spark at our company.

One person always appears in my offline list, but when he is online (still appears offline) I can chat with him if I try it. BUT I cannot send files back and forth with him since hes “offline” and this is the one person that i really would like to be able to do this with.

On everyone elses spark he appears to be online so the problem must rest with me. I have tried restarting and updating my spark, its been going on for a week now

Let me know if anyone can help.

Thanks!

Alex