Issue：equiment become invalid when charater moved to the standard league

Hi，
I have a deadeye character in version 0.3 and I haven't played it since it moved to the standard league. Just now I logged in with it and I found that the bow that I was using in 0.3 became an invalid item. So it says, " You can not use this equipment, and its stats will be ignored". May I know the reason for this and if this is a bug, could you fix it? It is a really nice item and I actually spend quite a lot on it.

Many thanks
Luis

This is the PoE 1 forum.

Check your item for socketables that are Limited to 1.

Thank you so much!