Not able to open google pass window as popup

[vimalvataliya1904]

I already reach out to google team, but they give me answer like redirect user to save url.. But my worried is if we redirect user to save url then there is no any option for come back to our site.. refer below image:

Issue => when i manually copy and open url for save , it works.. but when i set add to google wallet button and click on it, it will show the below error:

Can you please help me to settle this issue...