Yes, it either states ID not valid or states 'Your remaining Customer-Only use: 0 Times'.
One of the inputs to your transaction is unconfirmed. Your transaction can't confirm until this transaction confirms.
https://blockchain.info/tx/1b7dbaf6b2f97d53730a2224e65afddf4a21a30322bb7f95142aa32ac34ff22fSubmit the transaction above to the viabtc accelerator first, and after its accepted it then submit your transaction to it. The viabtc accelerator won't accept transactions with unconfirmed inputs like yours.
I've tried the free option, but I get this message - 'Your remaining Customer-Only use: 0 Times' and I've tried emailing them for the paid service but no response to my email which was sent about 14 hours ago. Any other options?
Yes, try contacting quickseller and macbook-air and offering either of them a small fee to confirm your transaction. Click their names in the quote below to open a page where you can pm them. They must be snowed under with similar requests, but it's worth trying.
You can contact either
quickseller or
macbook-air and offer a small payment to get your transaction confirmed fast.
This quote gives an example of how much they charge...
I faced a similar issue a few days back transaction not getting confirmed due to low fee but user "QuickSeller" got my transaction confirmed in minutes when I sent him 0.0001 BTC. He has access to some pool . PM him.
They can get F2Pool to confirm your transaction, so when it mines another block your transaction will probably get confirmed. You can see the times it mined its latest blocks here.
https://blockchain.info/blocks/F2Pool