how I can play crazy house in this app

it is an option that comes in live chess . sometimes its there sometimes not .
And, there are many options that are on the website but not on the app

The variants, other than 960, are only available on the website.

1.How to drop piece back on board using mobile phone in crazy house chess game?
Or
2. Please give sop of dropping piece back on board while playing crazy house chess.

Here's your answer for the website:
- upper left, click play
- then at the top of the list, click Play again
- upper right, where it says "Standard", click the dropdown and choose "Crazyhouse", then pick other options
- realize that there aren't many people doing it, so it's tough to get a game unless there's a tournament

TheLyinKing,
You are delusional. Yes, there are not THAT many people playing it, yet there's ALWAYS somebody that I can play against. I play day and night, for hours. And I've never had any problems with finding an opponent.
So your reasoning is laughable and rubbish. Don't embarrass yourself like that anymore please.

so how can we get crazyhouse award in chess.com app if it is only available in the website and now the official app? can we get the award in the website if we play crazyhouse in website or not? pls let me know and clear everything out for me thankss

so how can we get crazyhouse award in chess.com app if it is only available in the website and now the official app? can we get the award in the website if we play crazyhouse in website or not? pls let me know and clear everything out for me thankss
You can get the achievements by playing the variant under Play on the website, but not the Variants server.