Failed to connect stackstorm in k8s to MongoDB atlas

Receiving that err for mongo atlas connection with stackstorm in kubernetes:
2021-12-27 12:39:16,014 INFO [-] Patching sys.stdout and re-opening it with utf-8 encoding (originally opened with UTF-8 encoding)...
2021-12-27 12:39:16,016 INFO [-] Using Python: 3.6.9 (/opt/stackstorm/st2/bin/python)
2021-12-27 12:39:16,016 INFO [-] Using fs encoding: utf-8, default encoding: utf-8, locale: en_US.UTF-8, LANG env variable: en_US.UTF-8, PYTHONIOENCODING env variable: notset
2021-12-27 12:39:16,017 INFO [-] Using config files: /etc/st2/st2.conf,/etc/st2/st2.docker.conf,/etc/st2/st2.user.conf
2021-12-27 12:39:16,017 INFO [-] Using logging config: /etc/st2/logging.api.gunicorn.conf
2021-12-27 12:39:16,065 INFO [-] Connecting to database "st2" @ "USER.azure.mongodb.net:27017,USER.azure.mongodb.net:27017USERazure.mongodb.net:27017 (replica set)" as user "st2-t".
2021-12-27 12:39:19,149 ERROR [-] Failed to connect to database "st2" @ "USER.azure.mongodb.net:27017,USER.azure.mongodb.net:27017 (replica set)" as user "st2-t": connection closed,connection closed,connection closed
2021-12-27 12:39:19,150 ERROR [-] (PID=1) ST2 API quit due to exception.
Traceback (most recent call last):
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2api/cmd/api.py", line 85, in main
_setup()
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2api/cmd/api.py", line 59, in _setup
service_registry=True, capabilities=capabilities)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/service_setup.py", line 226, in setup
db_setup()
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/database_setup.py", line 57, in db_setup
connection = db_init.db_setup_with_retry(**db_cfg)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/persistence/db_init.py", line 76, in db_setup_with_retry
ssl_match_hostname=ssl_match_hostname)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/persistence/db_init.py", line 59, in db_func_with_retry
return retrying_obj.call(db_func, *args, **kwargs)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/retrying.py", line 206, in call
return attempt.get(self._wrap_exception)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/retrying.py", line 247, in get
six.reraise(self.value[0], self.value[1], self.value[2])
File "/opt/stackstorm/st2/lib/python3.6/site-packages/six.py", line 696, in reraise
raise value
File "/opt/stackstorm/st2/lib/python3.6/site-packages/retrying.py", line 200, in call
attempt = Attempt(fn(*args, **kwargs), attempt_number, False)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/models/db/init.py", line 170, in db_setup
ssl_match_hostname=ssl_match_hostname)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/models/db/init.py", line 152, in _db_connect
raise e
File "/opt/stackstorm/st2/lib/python3.6/site-packages/st2common/models/db/init.py", line 145, in _db_connect
connection.admin.command('ismaster')
File "/opt/stackstorm/st2/lib/python3.6/site-packages/pymongo/database.py", line 730, in command
read_preference, session) as (sock_info, slave_ok):
File "/usr/lib/python3.6/contextlib.py", line 81, in enter
return next(self.gen)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1298, in _socket_for_reads
server = self._select_server(read_preference, session)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1253, in _select_server
server = topology.select_server(server_selector)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/pymongo/topology.py", line 235, in select_server
address))
File "/opt/stackstorm/st2/lib/python3.6/site-packages/pymongo/topology.py", line 193, in select_servers
selector, server_timeout, address)
File "/opt/stackstorm/st2/lib/python3.6/site-packages/pymongo/topology.py", line 209, in _select_servers_loop
self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: connection closed,connection closed,connection closed

My conf:
[database]
host = "mongodb+srv://st2-t:f45ew2.mongodb.net/st2-t?retryWrites=true&w=majority"
username = st2-t
password = f45ew2
db_name = st2-t
port = 27017
ssl = False

env: stackstorm 3.4

Start with the [database] configuration and the traceback entry points in st2common/persistence/db_init.py and st2common/models/db/init.py, especially _db_connect. Reproduce the MongoDB Atlas connection from the Kubernetes deployment and determine whether the failure is configuration or connection handling; done means a confirmed fix or a documented, reproducible cause.