ManageWP & Cyberpanel

I have installed cyberpanel on a linode vps. I have setup my wordpress website and have tried to link it to my managewp account however it has not worked, it has given an error in managewp as shown below:

Connection problem 403 Forbidden. It looks like some of our IP addresses are not properly whitelisted in your security plugin or WAF. For more information about whitelisting

I know the IP address for managewp, how do I fix it please?