Yes, we had some critical issues with payment gateway tonight, worked all night to fix it.
Litecoin transactions are still experiencing difficulties.
Other currencies (not all) may hit the wall due to a general network congestion and huge cryptocurrency demand. For example https://blockchain.info/unconfirmed-transactions

Posting personal transaction details here won't help solving. Please don't do that. Our support team is working hard, you have to make request and wait. This is the only way. Please, note, pushing more tickets causes your request moved in the end of the line.

Thank you for your patience. We promise do our best.