Thank you for your reply. I consulted the host and here is their reply;

"Thank you for your reply. Seems you're on a VPS, thus you wouldn't be imposed on this 25 concurrent connection limit, that is adjustable in the my.cnf in /etc/. However, since you're on a VPS, we can also not explain this issue that you are having, as we're not familiar with the software that you are using.You may want to consult with the software vendors and see if they have some insight into this."

What should I do now?