Propagation issue on a new domain/app deployment

[ntnsndr]

I am having an issue with setting up a new app on my Cloudron system. I registered the domain on Namecheap two days ago, and immediately set up the domain in Cloudron using the API method, which has always worked fine. It has been over 24 hours. But when I attempt to install a WordPress site (Managed), some weird things are happening. The installation process gets stuck at Installing - Waiting for propagation of EXAMPLE.org (anonymized). And the logs for the app look like this:

Oct 27 09:43:44 box:dns/waitfordns waitForDns: nameservers are ["dns2.registrar-servers.com","dns1.registrar-servers.com"]
Oct 27 09:43:44 box:dns/waitfordns resolveIp: Checking A for EXAMPLE.org at 156.154.133.200
Oct 27 09:43:44 box:dns/waitfordns isChangeSynced: EXAMPLE.org (A) was resolved to 192.64.119.184,193.46.198.90 at NS dns2.registrar-servers.com (156.154.133.200). Expecting 193.46.198.90. Match false
Oct 27 09:43:44 box:dns/waitfordns resolveIp: Checking A for EXAMPLE.org at 2610:a1:1025::200
Oct 27 09:43:44 box:dns/waitfordns isChangeSynced: EXAMPLE.org (A) was resolved to 192.64.119.184,193.46.198.90 at NS dns2.registrar-servers.com (2610:a1:1025::200). Expecting 193.46.198.90. Match false
Oct 27 09:43:44 box:dns/waitfordns waitForDns: EXAMPLE.org at ns dns2.registrar-servers.com: not done
Oct 27 09:43:44 box:dns/waitfordns Attempt 187 failed. Will retry: ETRYAGAIN

Here's where it gets a little weirder. If I renew the domain certificates across Cloudron while it is stuck there, the website starts working; if I go to EXAMPLE.org, I see a WordPress website. But I can't get the installation process unstuck. And if I try reinstalling, the site disappears until I try the renewal again, which once again does not unstuck the installation process.

I attempted to install Surfer at that domain to see if it was a WordPress issue, but the same problem occurred.

Are there other diagnostics you'd recommend? Thanks in advance for your assistance.