I can attest to what Kerowyn said.
I also have an older ios device that will only run the older app that I have played on and off for the past 5 years.
These devices went down without any notice. I can not get to my older iOS character since I had not set up a email account for it. If I could log in the app, I could set up an email address and play it on web3.
The real problem is this. Turning it off with zero warning was not kind. Telling everyone to spend hundreds of dollars to buy a new device, well, it is not helpful.
Could you at least consider letting the older iOS app function well enough to let us set up an alternate email address. If you just turned the older app back on, so we could play them again, that would be even better.
And yes, we all know that not everything was present in the older app, but what was in it did work and it worked well enough for many of us. Sometimes I just enjoyed playing the lower level iOS toon on my old iPhone.