I'm playing on an Android device via the application.
The pictures are visible, but I'm no longer able to select the "explore the area" option (or whatever it was previously called). Now, I can only tap on the small icons in the app to either move to a different location or visit someone by clicking their portrait or a "?" icon if they're new.
After the PATS app was installed, Harrod appeared as a "?" icon in the Western District. When I tapped on it, a scene played where you meet him at his house. This was strange because the last time I encountered Harrod was in an alleyway in the Western District (before the whole rat quest), and I haven't completed any prerequisite quests for him to appear. I haven't met the otters at CV Arena, discussed transformations with Kru/Zorro/Trald, or met him at the gym. Despite this, the new scene's dialogue clearly suggested that we/the player were already familiar with him. I suspect this might be a bug.
At CV Arena, there are no people to meet in the app, and I can't explore to follow the otters, for example.
Regarding potions, the ones Kuri gave me to start gym training appeared in my inventory without issue. However, the ones Kru gives the player at the house do not appear.
Oh also, forgot to mention, but there's no "Tease" option whenever I encounter a battle. It's only the Attack and Grab stuff...