Refund of an off-plan property payments for delay in delivery

Salam,

Hope you are very well.

I am writing this email to understand the current law for off-plan properties in Dubai.

I started an agreement with a developer in Dubai in 2016 4th quarter. The developer promised to deliver the project by June 2019. Currently, the project is only 23% completed.

When I saw the project is being delayed, my payments were delayed too I paid around 40% of the unit price. Now I received an email/letter from the developer on the final Legal Notice, or they would cancel my unit.

Does the developer have such rights even though its a big delay from there end?

If they cancel my unit, what % of my total paid money will I be refunded from them?

I would appreciate your detailed and kind response in this matter, please.

Thanks