Jul 13, 2020 07:59 AM|yij sun|LINK
Accroding to your description,as far as I think,you could set max_connections.Max_connections is the total connection limit and max_user_connections is the per user limit.
The value of max_user_connections must never exceed the value of max_connections.
The default limit of max_connections is 151,your max_user_connections value is 30 and the user cann't more than 5.
So,you could reset your max_connections.