I haven't explored much of the XVG wallet, but it appears that once you use one Receive address, it changes the one listed in the "Receive" tab to the next one on the list. The number of receiving addresses may be limited, or it may generate new ones based on the expiration shown in the "Receive" tab, but I really am not sure. Hope that helps!

Was having issues with Electrum wallet not syncing. If anyone is having connection issues with the Electrum wallet after the recent update, I had to go under Tools>Network and tick the "auto-connect" box and then un-tick it and it's now working just fine. I guess it needed to update with new server addresses? Either way, it's working again for me.

Receiving address is under the "Receive" tab. The "Addresses" tab shows addresses which you have used to receive XVG. [I think] You can have multiple receiving addresses, one for every pool or exchange, for example, but I only use the one listed under the "Receive" tab, personally.