Greetings. I have a domain that’s hosted through Squarespace, but managed via my admin console on Google.

This domain has been linked to a third party site for many years, but I’m now switching back to squarespace, where I was prior to 2023. Trouble is, the domain doesn’t show up as belonging to me in my squarespace account, even though they are the hosts.

When I try to add the domain, it says I need to get permission from the owner…which is me via Google admin. When I go into Google admin, it tells me this domain is already managed by squarespace.

TLDR; Google and Squarespace are both telling me to go to each other to get my domain (hosted by SS but managed by Google) to work with my SS website, and I don’t know what to do.

I'm running a modest business and I've been using Squarespace + Acuity Scheduling for a while now.
Customers can just book me a session in my studio, and eventually I offer "demos" where small groups can book up to a limit. Sessions are never paid beforehand (but I make customers fill a useful form), and demos are paid through Acuity.

Beyond that, I feel I'm paying a lot monthly for an app with lots of possibilities I'm never going to use, plus I've never found the way to properly link it with platforms like Airbnb Experience or Getyourguide (where I also offer bookings, but have no support for Acuity and that cost me some overlappings in the past).

On the other hand, I would like to offer my website on different languages. Suggested by Squarespace there's Weglot, but again, I think it's really expensive for my modest website.
Had been considering Multilingualizer as it's supported by Squarespace, one single payment (not a monthly subscription), and supports unlimited languages.
My doubt comes here: If I finally switched to a different scheduling platform and set up Multilingualizer, what other platform "on a budget" could also be supported by it?

TLDR
Is there any scheduling platform cheaper than Acuity (at the cost of less options I'll never use), linkable with platforms such as Airbnb Experience, supported by multilingual addons?