ok lets summarise it:
- Webfolw did great job (DPA Form) in their legal way so we can use Webflow for EU clients without problem.
- Webflow can’t communicate with users according to data protection as it is illegal and can put them to risk
I will accept it and will not talk about Webflow anymore with a hope that at least small part of their announced funding (140M) will be used for EU members services.
This is great scenario for company or agency who can employ or hire lawyer beside designers developers, marketing specialist and another professions.
I agree that we as developers have to take steps and make sure that clients site is not only nice looking, fast, secure, and easy to find etc. but as well bulletproof when come to law in this case data protection for costumers of country the website is created and/or …
And because I really care I would like to have answers for potential GDPR questions from clients. Thats why I have asked questions HOW TO on Webflow platform. That said, as Freelancer I’m spending all my time on learning new languages, improving skills, implementing or get familiar with new updates in languages, design, SEO, servers etc… and now also trying to understand necessary basics of data protection.
But there is a big difference, If I mess up design, code, SEO I can go back fix it and “nothing” happened (I’m not talking about security). But if I mess up (implement wrong / not proper / not good enough ) law text it will have huge impact on client pocket and on my reputation. So even if I will have time to keep updated and fully understand law and its changes I will become a “lawyer” instead a developer.
I love to be a developer and I would like to keep it this way.
That was a reason why I asked for help and/or advice of best practices from people who knows more because they use it on “daily” basis.
FINAL SUMMARY
There is a way how to use securely Webflow for EU clients by using paid third party services to provide text that will protect EU clients to be fined. 
Another option as have been mentioned is to use EU servers, but I would not go for WP. 