If you see the alert shown below, it means you have reached the transaction limit specified by your plan.

By clicking on See upgrades, you can choose a new plan that suits your needs and allows you to continue using CryptoBooks.

To find out how to upgrade your plan or how transactions are calculated, please visit the links provided below:

Plan upgrade:

https://intercom.help/cryptobooks/en/articles/6771997-upgrading-your-plan

Transaction calculation:

https://intercom.help/cryptobooks/en/articles/6896008-your-plan-s-transaction-limit

Why you need to import your full transaction history:

https://help.cryptobooks.tax/en/articles/9596035-why-is-it-necessary-to-import-the-entire-transaction-history