Unstaking Purse

When i (try to) unstake my Purse, i get transaction error.

In first screenshot i see that in the field amount is says, 0 BNB.
There should be the amount of $Purse that i want to unstake, right?

you need some BNB for fee.
best regards Sylvia

Yes. I have the bnb in Wallet. But still the error message appears.

In my opinion the unstake protocol is not correct.
It should unstake purse instead of bnb.
But that’s a guess, I don’t have technical knowledge.