I use a custodian wallet for transaction and don't re-use any address.
Yesterday I decide to click the place I circle in the picture and different address was coming out. Then I was still clicking it so that the first address can come again but it did not come.
The button you clicked should ideally generate a new address every time till the limit set by wallet is reached. You must be able to locate a list of addresses generated for your account in your wallet settings.
Regardless of the address being displayed right now, funds sent to this or any previous address linked to your wallet will get credited to your account.