I meant that few days ago I have one address on blockchain.info, e.g. 17EtrrEXEC5dJEJi764UKdMkV8EujEyfZy but today I have another e.g. 314trrEXEC5dJEJi764UKdMkV8EujEyfZa
Sir I want To Clarify This Issue here, if You are Stating That Your Blockchain address is changed when you are copying it, It means That Blockchain Sites Has no problem at All, it means That You are Infected with the Virus Called Copy paste, I have also Experienced this kind of situation, When i was Participating a campaign and Put All informations regarding to the qualification, I copied my BTC address (that is supported by Blockchain) and then Paste it, but other Address Shown Up. So I ask, Members Here in This Forum and Then They Answered me That it was A Virus called Copy Paste.
My Suggestion is Run Your PC a Strong Anti Virus/malware so that the Virus will be Deleted, This could Be The Solution, Or Just Double Check your Address always when Transacting, I Get That Virus From unsecured sites.
If This is The Problem and my advice is According to your problem please consider this post. Thank you.