Sorry Ben, please ignore my question. I have just realised the Page Zoom on Edge was set at 85% and that is what was causing the problem. D’oh!
Thank you Ben, much appreciated.
Will the parent theme still update as and when required?
I always thought that a secure mail form meant that the recipient e-mail address is totally hidden from bots/spiders, both friendly and malicious. Are you saying that the malicious bot is emulating the form by filling in required fields, captcha code etc. and then sending the submit command.