Understand caching and TTL
The TTL tells recursive resolvers how long they may reuse a DNS answer. A resolver that cached the previous value can continue returning it until that cache entry expires, even after the authoritative zone has been updated.
Different networks refresh at different times, so one device may see the new destination while another still sees the old one. Local browser, operating system, or router caches can also affect what a test appears to show.
Verify the right layer
Query the authoritative nameserver or use the product's DNS status view to confirm that the intended record was saved with the expected name, type, and value. If that answer is wrong, the update itself needs attention.
If the authoritative answer is correct, compare results from more than one resolver and wait through the previous TTL. Avoid repeated edits during this interval; each edit can make the final state harder to reason about. For urgent changes, plan the TTL reduction in advance.