No, it doesn't. The word mistake or a true synonym doesn't appear in the message, as far as I can tell. What he wrote is: "we know that for some, the integration presented challenges, and we apologize for these difficulties."

It would have been nice to read "we have made mistakes that may have caused problems for you, and I apologize for that."

What they instead wrote sounds to me much like the classic non-apology apology we so often come across these days.

But hey, I get a free new passport if I can just prove to them that they were at fault. So yippee... all is forgiven...