My Bitcoin certificate is still processing, what does it mean?

As soon as you request a Bitcoin certificate, Bernstein crafts a transaction by paying a transaction fee that balances reasonable cost and miners' interest in adding the transaction to a block.

In the meantime the certificate will be PENDING. That just means that it is waiting to be approved. There is a chance that the transaction will not be included in the first few blocks, it then might take up to a few hours, depending on how saturated the unapproved transaction backlog is, but eventually it will be approved.  

You can check the mempool in real time at https://tradeblock.com/bitcoin.