What are the age restrictions for using mobile banking apps in Thailand?

This post is about "everything else". Been using the yellow bank for a couple of decades, atm, online website, foreign transfers, etc. Some days ago got a notice they were dropping the online website and to use the phone app instead. This happened a year or so ago with the purple bank, and everthing went smoothly. Yesterday I went to the original yellow bank branch and they required SIM card mobile data turned on in the registerd phone number as well as a letter from the phone co saying it was my number. I complied and today I returned. After all the photocopying and signing, they told me I was no longer elegible to sign up for the phone banking app because I was already 70. Went to a second branch where they confirmed the same. Passbook and atm are still useable. If I had the phone banking before 70, I could still keep using it. First time am denied a public service because of age. Moral: get your phone banking app while you are still young... 😀