Do you have an HTTPS website?
If yes, you can remove the double window opt-in for your end users by following these simple steps:
Step 1: To get PushFlew started, you need to paste the code on your dashboard in the <head> tag of your website
Step 2: Go to https://app.pushflew.com/code-and-impl
Step 3: Download the https plugin files (HTTPS zip file) from this page
Step 4: Extract these files in the Root Directory of your website
Step 5: Once you are done with the steps above, check the Enable https option
You’ve removed all the hindrances between you and your customers.