UPDATE - Patreon App Not Allowing Multiple Choice (Patreon)

Right now, the Patreon App doesn't allow multiple voting choices when you click the link to the poll.

My suggestion is to open the poll in a web browser.

A Patron has reported that refreshing the post after picking the options works.

Another possible solution some people have reported working is finding the post in the timeline and clicking on the options without opening the post itself.
Here are links to the two polls I'm currently running:

Chance Meeting Tail Virus Story Poll 2

Chance Meeting Tail Virus Story Poll 3