Did something change im past 6-9months?

When searching by Username only, no results found. This is on the iPhone app and web browser (normally from my iphone, which I still prefer vs app).

In past could simply search for 'coastag227' for example. Default search would pull all posts within the timeframe specified (usually 1yr default or 'forever').

Did notice results only go back 1-4 pages, not sure rhyme/reason. Example is if searched in past year results, would only go back say 2-6months, not back fill 12.

Curious if anyone else is experiencing this. Guessing not given no responses, but trying again since not a lot of traffic on this forum.