Eos registration using MEW with trezor 'Window Blocked' message

I went through the whole registration process but when i went to 'generate transaction' i got a 'window blocked' message, when i looked it up in the mew help section it suggested allowing pop ups when connecting trezor to mew. Where the hell do you do this?
Was seriously thinking about just sending my Eos to my exodus wallet but wasnt sure if they would support the upcoming airdrops.
Anyone else had these problems? any advice will be appreciated