Problems with MongoDB Atlas?

Question

MongoDB

Good afternoon!
I'm writing a test application on Node
Constantly when I use MongoDB Atlas there are some problems with connecting to the cluster. I added my ip to the whitelist , and the next day there was another problem with the connection. I went into the panel, and added ip again and it worked. Apparently I have a dynamic ip and it changed after a while.
This went on for some time. Then it stopped working again, I add ip , but still the error

MongoNetworkError: failed to connect to server [cluster0-shard-00-01-ngbam.mongodb.net:27017] on first connect [Error: connect ECONNREFUSED 52.58.188.237:27017
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1054:14) {
  name: 'MongoNetworkError',
  errorLabels: [Array],
  [Symbol(mongoErrorContextSymbol)]: {}
}]

I even set the setting that you can connect to the database from any ip, but it doesn't work!
The problem is solved either by creating a new account, or by creating a new cluster (new project). Well, what should I do now, constantly create new databases and accounts?
Please tell me what could be the reason, and how can I get rid of this scourge? Thanks in advance