Definitely, they have lossback for higher Tier level accounts but no idea if they offer lossback for gold account losing $50k in single bet.
Probably, they will compensate losses with higher weekly based on wager/loss calculation and higher reloads for plat 4+ accounts.
I don't want lossback bonus if it costs me $15k. Highly doubt it is over $1000 for such a nightmare.
On what basis the loss back will be calculated. Recently the weekly/monthly bonus were also changed. Few weeks back Stake team mentioned about its update on the bonuses provided. One thing I found important
If you're having an unlucky week and incur losses, we'll be adding extra to your bonus.