Order quantity error and slack

I am following along with this notebook tutorial and running into an issue when trying to enter paper trading position on a example crypto portfolio. Looks like the API requires integer values for order qty, which makes crypto trading quite difficult, I’ve tried to use notional value instead with no luck. Let me know if anyone have solid solution, code examples would be great.
+side note: I was trying to join the slack to get some help, but It looks like you need an @alpaca email address to register, has anyone found a work around or way to join?
thanks in advance