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Nope. I have held an account with them since last year and they come through. However, if you just started your contract then be patient as it can take a while to start up. It even takes longer if you paid with credit card.

For credit card payment, you will receive your 1st coins 30+2 days(release to your wallet), but you can see how much you earned daily

I've known it to take up to 3 weeks for credit card purchases. However, the company from the day you pay is mining so any mining payments from the day of payment are stored and sent as part of your first payment once they finish sorting your account set up. I go through the same thing every time I upgrade my hash power by credit card and I already have an account. Try not to worry. They do come through and after that are incredibly consistent, just the set up and account upgrades take a bit. Hope this feed back helps mate.

You shouldn't do unless they ask. Also use caution and make sure the email is from Genesis and not spam/scam. However, unless an email comes from them I wouldn't think it would be necessary. I never have had to and Genisis mining is all about allowing privacy for its customers. This is why you can hold multiple accounts at any given point paid for by the same credit card but under different names. The reason that Credit Card purchases take so long is the company is making sure that it's not a stolen account or id fraud, thus the extremely long waiting period of purchase. It keeps it safe for them and the customer basically. I hope all this helps.

i am also planning to invest in genesis mining, it is legit base on my research.

Their payment have been slow since end of Jul