TFG London has apologised to customers for disruption after it identified a "cybersecurity incident" on Sunday.
The award-winning singer said there were 1.8 million sign-ups for her 5,000-seat Royal Albert Hall show.
Mitte, who lived with cerebral palsy, starred as Walter White Jr in the Emmy-winning drama series.
The Legally Blonde star is investigated by the FBI following an alleged altercation on a flight from LA to New York.
Cast members on the long-running radio soap are said to be "angry" at plans to move from Birmingham.
The dating app which recently ditched its "women-first" chat rule has been bought by an investment firm.
Mitte, who lived with cerebral palsy, starred as Walter White Jr in the Emmy-winning drama series.
The Legally Blonde star is investigated by the FBI following an alleged altercation on a flight from LA to New York.
Price tells court she was "really shocked" to learn of allegations against ex-husband Kieran Hayler.
Price tells court she was "really shocked" to learn of allegations against ex-husband Kieran Hayler.