I had already tried uninstalling and reinstalling the application, but it did not resolve the issue. I have also paid attention to the swiping as mentioned, but the result does not change in any way. Thank you.

Be sure to not flick down, that selects the one in focus.

Once you write sms charles for example, and flick down, you should have a list of matches and then flicking left or right should go through them and flicking down once you have the one you want should work.

If not, perhaps you need to reinstall version 26.2.1.