It seems there is a bug on the current Fedilab version 2.39.0 where links are not visible. They are only visible when opening details.
People that encounter this bug, could you please tell us more about your android version? Thank you.
But doesn't seem related to version as you run android 12
@heldersimao
Yes. Exactly the same issue. The contributor that reported that bug, confirmed that customizing the link color in theming, fixed the issue.