NOpe. Never heard about XAPO beng a scam. I have heard they had some complications but nothing fancy, just the regular issues.
But their customer support is pretty bad to say the least 
Sent an email regarding my locked up account, got reply few hours later, sent the reply back and then no email back for almost a week now
Good thing is i managed to find the solution myself and then i took all of my money out of there
Offline wallet is the best yo
i am waiting for my funds out of xapo since they closed my account without any solid reason.. i provide them my externel btc adress to get refund as per their instructions but upto now no reply from xapo support ! im so worried about myBTC.. will they refund my money back?
Edit: Today Xapo Allowed Me to Access my account for 24 Hour oNLY ! To Pull out my Funds out of xapo wallet before final shutdown :-)
" now i get my all funds back out of xapo " Thnx God-Thnx to Xapo