K2 attachments are not visible using inStyle. I've verified by switching to several base templates
(Bees & Atomic)
It appears this is a .CSS issue, the attachment link text is being rendered in white, on a white background.
Corrected by editing Gavick Template/CSS/K2.css
line #287 - .itemLinks
Please address in future updates,
Thank you.
inStyle template - Gavern v.3.16
K2 - 2.6.9
Joomla - 3.4.0