Wix professional developer needed

I've just set up a Wix website recently and it's already giving me problems. My site is supposed to be a dog day care and dog boarding service that can be booked online with payments. However, the Wix booking form only lets you book in one appointment or class session, and will not let you book in consecutive days (eg if someone wants to book 2 nights or 4 weeks, it won't let them do it). A good example of a similar web service would be Rover. You can check availability of multiple pet sitters and book based on their service and calendar availability. This type of calendar is available through Wix hotels, and really should be used for a boarding service - I was lead to believe, from the way it was advertised, that this is how it would work (it said you can book online on a calendar). Unfortunately, this is not the case. There are a few services offered. Day care (for a day service, but clients could book multiple days if they wanted to, for instance if they are working professionals and need a day care during the week); Boarding (short stays, -1 week; and long stays for 1+ weeks with a discounted rate); and luxury B&B add-on service (for homemade meals the rate is £8 per day). Apart from the luxury B&B service, the other services have a limited availability of 2 at a time. However, even this doesn't integrate properly onto the calendar. It's all just a mess - I can't amend my calendar manually, say if I had filled up vacancies for boarding but have a slot available for day care, it just won't let me do it. I'm basically paying for a website on a premium plan that can't actually be booked (unless if you want to just book for one day). I've already had clients inquiring about long stays, so I would really like this website to actually work. In the event the online booking system works out too costly, I'd even rather just have inquiry booking forms. Anything would be an improvement. If someone can help with this, I would be so grateful.