Plugin Author
nK
(@nko)
Hi.
Customizer block will be fixed in the next plugin update. For now you can open once page “Appearance > Customize” in your Admin panel. Then try again add Customizer block, it should work.
“Unable to display content. Adobe Flash is required.” – what is it? We don’t use Flash anywhere.
Regards, nK.
Thank you.
Sorry about that. It’s video.
Same screenshot:

Plugin Author
nK
(@nko)
Yep, I understand what are you talking about. Have you tried to open Appearance > Customizer page first and then to add Customizer block? Block still is not working after these steps?
After this steps already okay. But, on Appearance – Customizer page I have some Notice. Yes, it’s not Warnings)

I hope fix this problem in next update, because I gonna use your plugins for my themes and I can’t say this information all my customeres 🙂
Thank you for your work. Appreciate it.
Plugin Author
nK
(@nko)
Should be fixed in 1.5.0 update. Please, check it.