Mobile double-tap seeking.

Yes. I took the previous Vivvyo SEO Media Theme v2.2.0 from the saved theme file and performed another full code-level repair/upgrade. The previous v2.2.0 ZIP is confirmed in your saved files.

What I changed in v2.3.0

Video player — major repair

Player is now at the absolute top of the single article by default, before breadcrumbs/title.
Added configurable player position:
Top of article — default
After title
After content
Rebuilt custom controls:
Play/pause
Progress bar
Buffered-progress indicator
Volume/mute
±10 sec
Playback speed
Fullscreen
Picture-in-Picture
Mobile double-tap