Can't access to adobeSign API after get plans

Hello, this is Trial Informatics from Korea.

We have created the following account and have been using the trial version to register applications and use APIs and WEBHOOKS. Before the trial expired, we purchased a new plan that includes API features for development. We applied this new plan to our account on April 24, 2024, Korean time. However, we encountered a problem. We could no longer access the API menu that was available during the trPreviewial period, and we could no longer use the APIs we had used before. We are now unable to register applications with Adobe Sign, and we can no longer use APIs or WEBHOOKS.

Please let us know what the problem is and how we can resolve it.

Account: otb_cs@trialinformatics.com

Purchased Plan: Acrobat Sign Solutions for small business