You can remove the Capital advertisement by turning off the Turn off pop-up messages for products and services feature. I'm here to help you accomplish this.
Go to Edit.
Select Preferences.
Click General.
Select My Preferences.
Remove the checkmark on Turn off pop-up messages for products and services to turn it off.
In addition, I've included a screenshot below for your visual reference.
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If there's anything else that I can help you with, please let me know in the comment section down below. I'll be always around ready to help.
I have turned on the block pop ups however that box is still there. I can't see the bottom of my pages such as receive payment page. The memo box and close box is no longer available. I can't scroll down or move it to view the bottom.
This Happened as of the last update which I did on 11/24/19.