Trying To Upgrade On Zoom After Purchasing On App Store

[Geo4]

Hi Guys, I purchased my zoom pro membership through the app store and I now need to upgrade. When I go to upgrade it says any changes need to be made through the app store and that it was a single license membership and I would need to cancel through the app store and repurchase through zoom. When I cancelled it through the app store and tried to upgrade through zoom it didn't allow me and it says "contact sales to upgrade" I really need to upgrade to business pro and add extra cloud storage for my business asap. Any help is appreciated.