Have followed the upgrade process to the letter yet when I login to Sendy it's not showing the new version?
If you uploaded the files to the correct directory, your Sendy installation will immediately be updated.
To check if you uploaded Sendy to the correct directory, change the file name of index.php to something else, e.g. index2.php, then access https://screencastsonline.com/sendy in your browser and see if it loads. If it still loads your Sendy installation, then you’re uploading to the wrong directory.