In the future if you select advanced you can add an exception to let you into the site until the problem is fixed.
That´s something I get sometimes on other pages, what I do is restart my PC and then I can get in without any problems.
On the contrary => vcoins opens its doors wide and welcomes me inside for a drink and a look around (I feel dirty)
Just tried it out, same here: "vcoins.com" results in an invalid certificate error, "www.vcoins.com" works fine (both with https). Use the latter, and don't drink too much. Christian