Subdomain DNS error

[klovistore]

Many of my customers face a DNS error when they try to reach the app, on a subdomain, but it works for some others; my app is on app.mydomain.com, I have a wp site on the main domain www.mydomain.com or mydomain.com
I wonder if I should use a CNAME config instead of the A config
What is strange is that it works for me! so I don’t know what to do
Anyone faced a similar issue ?

[johnny]

What’s the errors they’re facing?

[klovistore]

a DNS error, site not reachable

[johnny]

You can try adding the CNAME app.bubble.io

[klovistore]

I ll…

I have a dns propagation error, for weeks now

[klovistore]

@johnny

try adding the CNAME app.bubble.io

I should try to add it, with the A records ? Or without ? I saw a similar post like that but I was waiting the support which told to contact the domain provider, the domain provider put me on hold as they are investigating, I ll post a clear solution when this is resolved as I think many people will face the same issue.
I’m on Internet BS for my domain provider

[klovistore]

Thank you for your help johnny

[klovistore]

Here is my domain config if someone sees something :

[johnny]

Try adding without the A records, only CNAME

[klovistore]

I’l sorry I 'm really a newbie in domain settings, should I literally put ‘app.bubble.io’ or I put app.mydomain.net ?

[johnny]

So in your DNS records

You would want to create:

Type: CNAME
Name: @
Value: app.bubble.io

[johnny]

No. Under alias enter @ then under Canonical Name enter app.bubble.io

[klovistore]

It said there is a conflict, so I edited the current cname…

[johnny]

What are the records you have pointed to the subdomain? Ignore when I said “@” above, replace that with whatever the subdomain is

[klovistore]

Here is the current situation

[klovistore]

I put back in place the default SOA, and put name ‘app’ instead of @

[klovistore]

I dont understand how It will know to point to ‘my’ app in the bubble system

[klovistore]

anyway it seems to already propagate better the dns on DNS checker

[johnny]

Because of the domain name you specify in the Bubble editor. You did specify app.yourdomain.com in the Bubble editor right?

[klovistore]

yes, but when internetBS will point to app.bubble.io, how somehow bubble.io will know to point to ‘my’ app ?