Try contacting them on twitter, they seem to be more active there:
https://twitter.com/AskBlockchainYou can confirm it's legit by checking it is linked on their official twitter's profile description:
https://twitter.com/blockchainAnd please, be extremely careful with this. Always triple check you are replying and reading from their real twitter account. Scammers may try to impersonate them and DM you, or reply to you with "AskBlockch
ein" or similar, asking for confidential data. Do not trust anyone, and be extra paranoid.
They are probably taking too long to check your tickets because of the bull run. Bitcoin price rising = more people = more issues = more support tickers = more time. Also, their support naturally sucks. So it's the bad getting extra bad.
This is one of their last replies:
Our support team are currently dealing with a high volume of requests.
We appreciate your patience and our support team will respond as soon as possible.
Yeah it seems like a big pain for sure, I have written them now on all canals I can think of, thank you for the tip and link, I double checked just to be sure this time...