You will be late even if you set a notification alert on Twitter because Duelbits has a dicord channel which they use to drop this code first before the social media. Duelbits discord has a lot of active user compared to twitter. That's the reason why the code is always claimed already even if the interaction on twitter is very low because Discord user usually claims first before us twitter user.
I suggest to join the discord and set notification in there to claim it early.
https://discord.gg/duelbitsDid you make a mistake when typing this reply?
If Duelbits are keen on providing their codes on Discord earlier than on Twitter, it is reasonable to turn on notification from Discord. Why turn on notification on Twitter rather than Discord?
Discord is available for mobile, desktop, browser and you have multiple options to use Discord and get its alert notification. If you use Telegram, I believe you will have no issue to use Discord on mobile.