Blockchain.info banned my Ip?

I'm trying to access my blockchain.info wallet but the page says :

Quote

Error 1006 Ray ID: 1994191f6dae06c4
Access denied
What happened?
The owner of this website (blockchain.info) has banned your IP address (*.*.*.*).

CloudFlare Ray ID: 1994191f6dae06c4 Your IP: *.*.*.* Performance & security by CloudFlare

I can access using ZenMate plugin but I would like to know why they ban my Ip? I'm connecting over 3g.