You need to be real quick, normally I will open one tab with settings =>> offers and open Telegram Web so when the notification comes u can quickly click on the code copy and paste to redeem. But this also is 50% chance for the lower wager requirement codes. Best is to get your wager up to claim the highrolller wager which the chances are higher.
Out of all the high roller wager drop the 25,000 wager requirement and 6.25 dollar drop is the one that sometimes after a few days also it's still claimable. Other than that other drops are really fast redeemed.
If you are a mobile user it will take abit of practice as you need to open Telegram click on the code copy and paste while holding on to the text before the copy and paste function comes out which makes it way slower compared to using pc.
Hope this helps.