can we ask why this templet not avilabel now? is this company real or not ?
please advise us.

Items can be removed on occasions (more info here).

That said it may only be disabled on a temporary basis so your best options would be to reach out to the author and ask (form bottom right).

but can we use it if its puchased before
Thank you

No, you can’t use it before purchase envato market don’t have this system.

Yes if you bought it then you can still use it regardless of if it has since been removed