Effect tool not working in Photo-Paint X7.

In Photo-Paint X7 when I click on the cottonbud icon, the circle outline appears but nothing changes on the photo as I left-click and move it across the image. Running Windows10.

Has anyone else experienced this?

It used to work fine - but stopped suddenly. I have tried re-installing X7 suite several times, but no success in overcoming this.

Not sure why, but this issue came shortly after I also experienced a problem exporting images as .jpg. I subsequently found a solution to the export, but not the Effect Tool malfunction.

Would be grateful for any tips/work-arounds, as I haven't seen any similar posts on this problem in any forums.

Thanks. -Geoff