Yeah my problem was related to the 'my systems' page on the app; my pool was listed but had the red dot (instead of green), so I could not actually get in to any of the function. Apparently there was 0 communication between the panel and the wifi and again would guess it was the tp-link (not really Jandy's fault). That said, my builder installed the tp-link unit because he knew there might be a problem with communication due to the location of my router and the panel, which are almost at different ends of the house. I only had this problem twice in the 2-1/2 years I have had the pool; first time was really frustrating and the second time was a quick/easy fix.
With regard to your comment, I would agree for the most part. After my pool was built in 2018, the app was really glitchy in that it seemed to lose connection fairly regularly. It was hit and miss whether I could use it or not, so I was constantly going to the handheld unit. However, there was some kind of app update earlier this year that seemed to fix my issues. I almost 100% use the app now and don't have the same issues I used to, although ran into a 'no flow' issue that I fixed but not sure how (I have a thread on that).
Lastly, I would just say that it seems to me it is difficult for Zodiac to troubleshoot the hardware/software side of the Aqualink. I would guess the development and integration was outsourced so they do not have the internal expertise to work out the glitches. In the 3-4 times I have called there, all related to the communication and function (my 'no flow' problem), tech support does not seem to be able to help much. It's like canned/standard questions and answers. I get it, but they should at least have one guy on staff with the knowledge that can figure it out. Maybe I am wrong or maybe I am just not dealing with the right people there.