Sending universal links through email with Brevo (sendinBlue) leaves a 404 page behind in safari

I have set up universal links which work - after clicking on link I see my website for like a second and then im being redirected to my app. When I open safari afterwards, I should see my website, but I see a 404 page/im sending the link via email using 'sendinBlue' and the 404 page shows a sendinblue email error.

error shown: build-verify URL: build UrlParms: build-verify URL: cleanURL: invalid URL: host missing

Does anyone use brevo as well and could tell em why this is happening? Thanks!!!