To view your billing plan, simply click on "Billing" under Studio Settings. From here you can see your current plan and the other plans available. If you would like to change your plan type or billing frequency all you need to do is select, enter your payment details and submit or contact Mydoma Support in chat bubble or by email. Afterwards, you will receive a confirmation email of your plan change followed by a receipt for your purchase.
You will also be able to find latest pricing model on the official website and here's the link to the pricing page.