Hello Samedi
Thank you for your speedy reply.
I have not tried rolling back to a previous version as yet. To be honest I was not sure how to load up a previous WP version. I did not want to use a backup version of my site as I have added such a lot of information since the 4th or 11th of August and I don’t want to lose it.
The theme I am using is Kopa Musica.
I don’t think I am using a specific plugin for the menus other than that within the Kopa Musica Theme ( sorry but as I say I am not techy but I think this is the case!).
I have always used Kopa Musica and have not had this issue before.
These are the plugins I have – some are not activated.
Plugin
Akismet Anti-Spam
Settings | Deactivate
Ambrosite Next/Previous Page Link Plus
Deactivate
Anti-Captcha
Deactivate
Classic Editor
Deactivate | Settings
Custom Recent Posts Widget
Deactivate
Easy Updates Manager
Configure | Deactivate
Enable jQuery Migrate Helper
Activate | Delete
GA Google Analytics
Activate | Delete
Gwolle Guestbook
Deactivate | Settings
jQuery Updater
Activate | Delete
Kopa Musica Shortcodes
Deactivate
List category posts
Deactivate
PayPal Donations
Activate | Delete
Really Simple SSL
Premium Support | Docs | Settings | Deactivate (revert to http)
Slimstat Analytics
Deactivate
Theme Blvd News Scroller Widget
Deactivate
WP Post Sorting
Deactivate
WP Subscribe
Deactivate