Thanks. It didn't appear on either laptop and those are the only other devices I have. But I did figure it out late last night, in case anyone else has this issue, which I think may have arisen with iOS 17.3. Not positive.
In my iPhone DIsplay and Brightness settings, I have the last toggle set for Larger Text. I had to toggle it (temporarily) to default, which decreased the font and icon sizes on my phone and shrunk all the text on the roadblock so the CONTINUE button was no longer hidden. Once I was able to do that and click on it, roadblock cleared. Then I toggled back to Larger text.
I work with apps all the time and the developers should be taking various screen sizes and accessibility/settings into consideration when doing these, so they are compliant with accessibility standards, but apparently this one did not go thru all the checks.