Can you please clarify your question. Are you saying that you upgraded to Elements 2019 from Elements 14? (Elements 2019 is actually version 17 of the program.)
If you have recently upgraded to 2019, it is likely that there is a lot of auto-analysis taking place in the background. Depending on your computer specs, it may take a while for your watched folders to be found and displayed in what is a different dialog than Elements 14.