my developer sent me a letter stating they acquired EOT(extension of time) that given by housing ministry

3 period of EOT(s) consists  total of 21 months starting from march2020 to dec2021 to be excluded from LAD count.

thanks to above extension, the project buyers wont receive any LAD even if it completed in next year (and many buyers signed spa on 2017)
we'd gather a small group of affected buyer from our project & I believe there're more affected buyers from other projects as well, can we form a discussion for solution here?

any suggestion? our group are also seeking legal advice, any lawyer feel free to contact me.