How to cancel a property purchased by a foreign company as the law doesn't allow it?

I have a foreign company registered in South Africa that has signed a SPA with a developer in Dubai.

However, the unit that we bought has not been registered with Dubai land affairs as apparently, foreign companies cannot own property in Dubai.

We have paid 51% of the money and the developer is refusing to cancel the Agreement as according to our understanding the contract is invalid as it has been signed with a foreign company.

And legally, the company can't own the property that the foreign company has signed the Sales & Purchase Agreement for.

Can you advise, please?