price changes

Hi, Please I urgently need assistance to solve this pressing issue in my store. I think the plugin is working wrongly as I notice today that all my product prices have changed to $0 . all effort by me to rectify this prove abortive. kindly assist me in fixing this problem.

I'd like to have control over my product prices, since it doesn't always make sense for me to sell two products that are $0.80 on AliExpress for the same price on my own site. (I might want to sell one for $5 and one for $10.) But I would still like to know if the AliExpress prices change, so I...