Well we are not able to replicate this issue at our end with or without the cors extension enabled .
Please make sure that you are using the latest package of wplms ionic app .
If still issue appears then pleas share your whole ionic project folder in zipped format with us to check this out .(upload it somewhere online and share its link here in private reply ).
To show data from your site you need to clear the existing data first .
refer : inspect element and then : http://prntscr.com/i3rsos