Appointments+ inegration with MarketPress

I have few issues with integration Appointments+ and MarketPress.

The first issue:
I made a product page, but it wont display the product information (other than the shortcodes) unless I turn off the 'require payment' setting in Appointments+ settings.

Second issue:
When the user book an appointment and proceed to the cart, the price is 0$, but it should be 150$. It shows the correct price when I'm booking the slot, but in the cart it became 0$.