reviews page add-on

Hello, i would like to kindly ask if there is any troubleshooting i could do to display all the reviews in the reviews page. I import normally but they never show in the reviews single page i made. I see a loader with 4 dots but then blank page. On products the reviews are displayed below...

I recently bought your plugin called Reviews Page Add-On by AliDropship...but flags are corrupted... I cleaned the browser cache, flushed the host cache, but nothing changed .. always Country flags are not loading... I asked this support team several times to fix this but had no positive answer...