@markmatty
There are hundreds or even thousands of bank/CU institutions that do not provide a downloadable 1099-INT form for their customers.
Look lower on the page where you would normally make the selection...to "Enter Another Way"...or "Type it in myself". Possibly both selections on subsequent pages.
Don't try to upload a picture or PDF of that form...too many computer AI mistakes cause complications....Just Type it in...yourself.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*