Ionos / 1and1/ Domain problem

Help! Using Ionos (previously 1and1) for domain hosting. Added the a name records and the webflow cname and made the mphaccountants.co.uk as default as opposed to www.mphaccountants.co.uk in my weblfow settings. It says it’s connected but when I go to the site it attempts to go to www.www.mphaccountants.co.uk and ‘the server IP could not be found’.

I’m sure this has been answered before but can’t seem to find the right topic.