Please refer to the following steps to change the cPanel account bandwidth limit from WHM.
Step 1: Log in to your WHM Panel.
Step 2: Go to the Account function and click on the Limit Bandwidth Usage.

Step 3: Search the account for which you want to change the bandwidth.

Step 4: Select the account and click on the limit button.

Step 5: At the limit bandwidth usage box, enter the bandwidth amount in MB as per your requirement and click on the change button.

Step 6: After the successful change of the bandwidth, you will get the screen below.

