I’ve never heard of correcting a node string.
Maybe, it’s certainly not any official support. Personally, I’d never trust anyone who write “Synchnorize” with my money … 
@JettaRed yes, it is a scam.
If you need support, you can open a ticket here: https://trezor.io/support/
Never give up any personal details, especially recovery seed and read the article here: User manual:Security best practices - Trezor Wiki