Is this man a liar? My daughter seems to have been cheated.

According to the information you provided, your daughter may have been cheated by an e-commerce operation training institution or individual. This kind of scam is often in the name of helping online stores increase sales, and defrauds online store owners by charging high training fees or commissions. In this case, you should take immediate action to stop the loss as soon as possible and prevent further fraud.

Here are some suggestions:

Contact the e-commerce platform as soon as possible. If your daughter has opened a shop on the e-commerce platform, you can contact the customer service or complaint department of the platform to reflect this situation to them and ask them to verify the information of this company. The platform may give some protective measures, such as revoking the company's store authority to prevent further losses.

Seek legal support. If you suspect that this company is suspected of fraud or other illegal acts, you can consult a local lawyer or legal aid agency to understand the ways and means of safeguarding rights.

Beware of future scams. Your daughter should be more alert to similar scams in the future. It is suggested that she carefully check the contract, keep good evidence and carefully choose any training or service provider, especially in the case of insufficient information and background investigation.

In short, fraud is a very common problem, but by taking timely measures, your daughter can reduce losses and avoid further fraud.