From the myTelegraph website – I have taken the liberty of copying it here, as the link in the banner doesn’t always work:-
Important information about MyTelegraph
As part of our continued investment in the digital experience for readers, we have now completed migrating our website to a new platform, which we hope you had a chance to explore.
We would like to inform you that from June 8, 2016 the MyTelegraph section of the website will no longer be available. If you want to preserve any of your content, please follow the instructions below on how to export your My Telegraph blogs.
Should you wish to comment on any articles, you can of course do so through our Telegraph Facebook pages or via Twitter. In the meantime, we would like to take this opportunity to thank you for your contribution to this community and your continued support of The Telegraph.
How to Export your MyTelegraph Blogs
Ensure that you are logged in to MyTelegraph
Navigate to http://my.telegraph.co.uk/blogs and visit one of your blogs
Click ‘Edit this post’ from one of your posts and you will be taken to the WordPress control panel
On the left panel, navigate to Tools -> Export
Select what you want to export and click ‘Download Export File’
If you wish to import your blog to a new wordpress site, please do the following:
Register a new site at http://wordpress.com
Navigate to your Dashboard, from left hand panel select Tools > Import and follow the on-screen instructions. For more help, click here: http://en.support.wordpress.com/import/
Please note: Your existing website login details will remain the same. If at any stage you have difficulty logging in, you can reset your password by clicking on this link.