Can I pay and use only your hosting, but not paying constructs sites?
Yes, there is a free Starter plan https://webflow.com/pricing, which you can sign up for any-time.
What are your DNS addresses? I want to transfer my domain (http://ivanishchev.ru/) to Webflow
You cannot transfer the domain to Webflow as it's not a Domain Name Registrar. You can point the A or CNAME record to Webflow's servers.
Can I upload my files or just publish sites with webflow?
There is no import existing pages feature. You have to design/build them using Webflow designer interface.
So, I paid for your hosting. But I have problem.
The site 2domains.ru where I bought the domain in DNS settings, there is only a field name dns and ip address of the dns. In the name field I enter @ in the field ip these figures. But these values are not accepted. Please, help me.
Please contact your domain name registrar to ask where to place A and CNAME records. Alternatively, you can setup a cloudflare account, which will provide you nameserver records instead.
Ok. Thanks. And one more question) In the publish settings of the website: "Publish images using SSL CDN"
Why SSL? Why not just CDN?
It is already on the CDN. This is for encrypted images or SSL CDN Images, in case your site is https so all elements in the site is encrypted and browsers don't see it as broken https.
Thank you, I understand!