We are pleased that you want to upgrade the license and want to use the extended options of the Extended License. The license can be easily upgraded via Envato support:
Alternatively, you can also buy an Extended License and apply for a refund for the Regular License:
https://help.market.envato.com/hc/en-us/articles/202821460
Enter “Upgraded to Extended License “in the text field. That’s it! 🙂 A refund usually takes 4 to 6 business days. For further questions, please contact the CodeCanyon/Envato team directly as they are responsible for billing, invoices, and refunds.
Alternatively, if you do not want to request a refund or upgrade the license, you can re-use your existing regular license for another app covered by the regular license.