Data in replication to Azure Mysql is not working

Question

Today I've tried to setup data in replication from dedicated Mysql 5.7 (Percona xtradb 5.7) server in to "Azure Database for MySQL server"

Completed all steps in the guide: https://learn.microsoft.com/en-us/azure/mysql/howto-data-in-replication
Verified requirements & limitations are Ok: https://learn.microsoft.com/en-us/azure/mysql/concepts-data-in-replication#limitations-and-considerations

Finally "show slave status" query executed in Azure MySQL server returns:
Slave_IO_State: Waiting for master to send event
Slave_IO_Running: Yes
Slave_SQL_Running: yes
Seconds_Behind_Master: 0
Slave_SQL_Running_State: 'Slave has read all relay log; waiting for more updates'
Last_Error: ''

From this query perspective replication works well, however data changes made on master in "testdatabase" are not synced to Azure Mysql replica.

Please advice, where might be a problem.