If this is a new installation, then probably your site is not yet receiving IPN notifications. This is the most common problem with this adapter.
Please go through the troubleshooting section of the coin adapter, under the heading “Deposits come through to the CoinPayments platform but do not show up in the plugin.”.
Follow the instructions, and if you are still facing the same problem, please let me know. I would need to know what you have tried and how far you got.