Stuck at "Currently provisioning your Let’s Encrypt certificate"

Hi,
I’ve set up my new custom domain weeks ago but I haven’t been able to receive the TLS certificate yet as it’s been stuck on “Currently provisioning your Let’s Encrypt certificate”. I’m using Netlify DNS, everything seems to be set up well. I’ve followed all troubleshooting steps with no obvious issue, test on letsdebug.net says it’s all ok. Could you please help me resolve the issue?
Thanks!

Site name: shiny-heliotrope-e6305d.netlify.app
Custom domain: la-da.phd

I’ve routed this ticket to our helpdesk, we’ll follow up via email.