Before rushing to memorize the definition: what is blind signing, and why shouldn’t you sign if you can’t understand what you’re signing?
Many hardware wallets don’t allow blind signing by default. If a device can’t parse the contract data, you’ll need to enable blind signing in the settings.
You should also verify the source shown in the signing request. If the domain doesn’t match the official one, reject it outright.
While you’re at it, take a quick look: $ETH is currently priced at 2246.29 (24h +0.65%).