So I created a homebrew wand, it us just a +1 wand. It doesn't require attunement, it only is a plus 1 on attack spell rolls, not damage, and it doesn't have the ignore cover benefit that the only other +1 wand(the war mage) has. It shows the number correctly, making my attack modifier a +7, on the website format of the character sheet, but not on the app version, it remains a +6 despite it being equipped. I tried equipping and attuning a wand of the war mage, and it worked then. But the issue with that would be wasting an attunement slot when my dm said this homebrewed plus 1 doesn't need attunement. It's not a huge deal but knowing myself I would probably forget to add the plus 1 in my head, and I can see that being important. Is there any way to fix this bug?

Please see the Items & Equipment FAQ #9: :A Homebrewers’ “How-To” FAQ* - Homebrew & House Rules - Dungeons & Dragons Discussion - D&D Beyond Forums - D&D Beyond (dndbeyond.com)

Actually, this is more likely a case of General FAQ #6-B affecting only the app version. Although, it might be a case of Items & Equipment FAQ #6. (Same link as Lolths_Bane provided.)