I pointed my nameservers to cloudlflare’s nameservers
I activated Email (beta) and made 1 catch-all account to forward any mail to my gmail account, I let the Cloudflare webtool add the dns recorsd which are 3 mx records and a spf record
I added the A and AAAA records for my webhost
I waited for some days
a) Email is not working, I send an e-mail to this address but it does not show up in my gmail the email routing summary also does not anything.
b) It does not show a website in the browser, Tracert immediately stops and says “unable to resolve target system name”
It’s pretty hard to determine where what goes wrong. I think all settings are ok.
This sounds like your domain’s DNS is not resolving at all. Make sure you follow the setup guide correctly here:
A couple of things to check:
That your Nameservers are set properly at your domain’s Registrar to only the ones listed in your Cloudflare dashboard - no other nameservers should be set
That you do not have DNSSEC enabled from any prior provider - you can check this via a tool like https://dnsviz.net/