Warhammer +1 Doesn't Look Right

I rewarded a cleric a Warhammer +1. Once downloaded from Compendium it does not give the 1 handed/2handed option in Attacks & Spellcasting. s a regular Warhammer. In damage 1 it shows the 1[MAGIC], but not in 1d10, in fact it does not give [STR] modifier either. I am very new to D & D and Roll 20, but neither me or character (also new) could figure this one out. How would I go about fixing this?

Additional Information how it comes up in chat: 1d8 roll:  1d10 roll: 

Why don’t you simply untick the damage2. That solves your problem for onehanded. for twohanded you then make a new entry, enter everything the same way and change to d10. 

There's a few errors with +X weapons in the Compendium, often reported, never fixed. Either what Vince said, or even simpler, modify the normal Warhammer entries (if they're already on the character's sheet) with "+1" to the name, and Magic Bonus: 1 to the damage section. AFAIK the mundane versions of the weapons are all correct.

Thanks for the suggestions. Good to know that there is a known issue. We will tinker around and see what works best.