Transfered in USDT, but will not let me convert or Move to another wallet

Looking to start Staking SPI, and the UniSwap app offered to link to METAMASK. I m trying to convert my USDT to SPI, to hold and start staking, however non of my transactions are allowing me to click the ‘confirm’ button when the METAMASK pop up asks me to verify UniSwap.

This seems to be a difficult bridge/Wallet. Any help would be appreciated!