On Kovan test network, the payment screen stalls at "estimating fees" when sending money to a smart contract

[fatboyslip]

This happens when trying to send money to smart contract, ie not to a standard ethereum address. For instance, I tried to send money to this contract, which works with metamask and other standards wallet : 0x28dEB9fd4f869A8D5B3242b17e0Db55D390B02Aa

A possible fix would be to allow the fee field to be populated manually, as well as providing a max gas field

Regards

Johann