Jim, from what I see from your screen shots you are using a sound blaster with ASIO4All drive set to 24 bit 48,000 sample rate. But your Reaper setting appear to be WAS 44,100 sample rate. In the drop down box in reaper for audio drivers select ASIO4All. Also make sure Reaper is running at 24 bit 48,000 sample rate as if I remember from many years ago Sound blasters only use that sample rating.

Side note, if it were me I would upgrade to a true interface like a small focusrite or Presonus and use real ASIO drives or dump the ASIO4All I’m not sure that driver has been kept update through the years and is not actually a ASIO drive it just fakes the Microsoft drives into thinking it is ASIO.

Great little starter setup. https://www.sweetwater.com/store/detail/AudioBoxUSB96--presonus-audiobox-usb-96

HP Win 11 12 gig ram, Mac mini Sonoma with 16 gig of ram, BiaB 2025, Realband, Reaper 7, Harrison Mixbus 9 32c , Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app.