Hi @priscillamc Thank you for supporting me.
1. I do not use any tool do duplicate my posts. But I once create new product post by copying and editing an old one.
2. I do not import any post from other site to my site.
3. In products sitemap, the dates are accurate.
4. Please take a look at a link that has problems.
https://thpharma360.com/thuoc-epclusa-gia-bao-nhieu-mua-o-dau-tot/
update: when I did index url again to GOOGLE SEARCH CONSOLE, the published dates went accurate. But after few days, it automatically return to the wrong date. (24/01/2019).
