Why am I seeing warnings to update again when I am already up to date and to renew my subscription when I have an email from you saying my subscription ran for two years from 14 March 2009
what avast version do you have ?
Support for 4.X is ending now
Latest version http://filehippo.com/download_avast_antivirus/ ( this is free version )
If you have 4.8 pro, with a valid license then you have free upgrade to the new 5.1 pro
welcome to the forums, Sigord 
After the update you should still be able to retain your subsription.