Hi @wiso4151, this article may help to give you some ideas, what kind of payment solutions or e-commerce can be used on a Webflow site: E-commerce solutions that work with your Webflow hosted project - Webflow integrations - Forum | Webflow
For specific advice, share the link to your site, plus any details, see the posting guidelines 
Posting Guidelines for the Design Help Category - General - Forum | Webflow