If so, is this the plugin you used? https://www.ads-software.com/plugins/https-redirection/ – you could post your question there for support.

Or you could try a different forcing https plugin. I like the Really Simple SSL plugin. Some hosts (Siteground for instance) provide their own plugin for forcing SSL.

If you’re using a caching plugin, try deleting the cache and trying again.

Is the home page visible but no others? Then update your permalinks.

Many many thanks, I was beginning to wonder if it would ever work !!!

Be careful folk if you think its a piece of cake installing https it is not