I assume you've read this,
and saw the 14-day free trial.
Consider joining,
You can ask your questions there, although I can't guarantee Mikey will be any more responsive.
You can search the Taplist.io forum. For example, you'll find that Taplist.io has been supported on an iPad since September 2020.
As a homebrewer, I'm pretty sure you're getting the "Starter" (aka, "Basic") plan for $39 per year,
The names of the plans seem to have changed over time. At one point, there was a "Free" plan that supported four taps and a "Hobby" plan that supported 32 taps. Your best bet may be the free trial. See how many Taps you can add.
A "Picture" would be associated with a Beverage. A Beverage is, in turn, associated with a Tap. Again, you should be able to verify this as part of the free trial.
Good luck!