Will consent to collect personal information make Webflow forms legal according to GDPR regulations?

There is a jungle of GDPR-related posts in the forum, often with old and conflicting information. So, I will try to clearly formulate a question regarding the use of Webflow forms:

If you collect personal information from a European citizen using Webflow forms, the data will be stored on US-based servers, and by default, it will be in conflict with the European GDPR regulations(?).

This is what Webflow has officially stated:

If the users that send personal information in a Webflow form are clearly informed, and consent to that personal information is stored at US-based servers as a result of using the Webflow form, this will make it legal to use Webflow forms to collect personal information from European citizens?