The TM.30 app appears to be working and I just completed mine as arrived yesterday. One thing puzzled me, however, and that concerns choosing a 'visa type'. There is nothing as simple as "NON-O", which is what I have (with retirement extn). There is a NON-O(LA), however when searching for that on Google it appears to be something for immigrant labour, but I might be wrong.
Eventually I just opted for "NON-IMMIGRANT-90" and it seemed to work, however I'm not convinced that's correct.
Any advice? Thanks for taking time.