This is the first I've heard of a pink stripe and smart checker.
Have you recently installed any firewall or antivirus software that might be interfering with your browser?
A screenshot of the warning would be helpful or if you can't do that, an exact copy and paste of the error
It says "this message looks very suspicious to our Smart Screen filters so weve blocked attachments pictures and links for your safety" Above this is a red cross and below it says "Show content"
Sorry ,being self taught I cannot do screenshots or copy and paste. I'll get the boy next door to teach me at halfterm I have however recently had to renew my AVG safety thingy This does not have a firewall but Windows 7 does Perhaps it's that.
Thankyou for your interest I do appreciate it and if this continues I'll get the chap who services my computer to have a look at it.