I am not able to check out while renewing the ArcGIS Personal use license as there is a mandatory field for entering #Promo Code. I don't have a promo code.
What could be the best possible way out?
No. Promo codes are optional. Gives you discounted price
At the bottom of the ArcGIS for Personal Use page, you'll see the ability to chat with an Esri representative and/or call the 1-800-447-9778 number. They will be able to assist you directly.
Could you help me with an arcgis PROMO license?