iPhone - Software version 13.3 -Face ID
App version 1.0.17
Screen – Sell MPS Assets
Trade: Market Order
Amount: .0000001 MPS
Allowed price slippage (%)” 2
Change Gas Price from 1.5 to blank.
Gas Limit: I left as 28808
Got an “invalid number” error message as expected
Nevertheless, was able to select the “Sell MPS” button, and successfully transmit transaction.