Item on Invoice

Create new Invoice
When I type in item on item box once items that I set on the Items appear.
I can select the item, price automatically fill, and then this feature disappear.
I use the latest chrome browser 76.0.3809.100 (Official Build) (64-bit), and also try on the latest firefox browser (68.0.2 64bits) on Windows 7 Pro 64 bit.
Since on invoice I can not choose the Items the Items on invoice become custom item
I use app.akaunting.com
Please Help.

Rgds,
Jason