add liquidity max, wrong fee calculation

If i want to add liquidity, the Network fee showing 0.07 TZERO.
Calculating looks like (Balance - Fee = Max Amount) but if i want to add the max ammount i get the error "Transaction failed, try again or adjusting the slippage"

The networking fee from nightwallet showing 0.0003 AZERO so it should be enough for the transaction.

Screenshots:

Mobile IPhone, Safari + Nightly

Can you please check or do i something do wrong?