Html link not shown in phone view

Hi guys, I need your help. I place my html link in the scene, but only can able to click and view the link via pc. Once I load in phone, I cannot see the link when I click the bottom. Does anyone have idea to solve the issue? Thank you.

Here is my scene:
https://onevr.shapespark.com/fo_series_all_empty/

Which link has this problem? I’m able to open the i triggers above the desks on mobile (iOS, haven’t yet tested on Android).