[Introduce Yourself]

Hello, my name is Iain Harvie and have used Serif Programs and Applications for many years and have been extremely pleased at the choice, accuracy and value of all products.  I hope this introduction is in the right section and I'm grateful for the opportunity to discuss my problem.  When I saw Affinity Photo I bought and installed it straight away.  Another wonderful App and of course I bought and downloaded Designer soon afterwards.  However, when running the Designer installer it fails to install and there are no notifications after the initial Windows acknowledgement.  I have tried  downloading with three different browsers.  I click acknowledgement to let the program make changes in Windows 10 [recently having installed the anniversary update] and Task Manager confirms that Affinity is running in the Background Processes but not that the Installer App is running and the process progression is stalled. After help from Affinity it was suggested that I leave the installation program running which I have done for many hours with no further response.   I have tried stopping my Anti Virus during download and installation attempts and if it finds any problem with any new or updated programs it is set to ask whether it should be allowed to connect to the internet but no such warning is instigated with Designer.  Has this problem been identified and solved by anyone else?  I had no problems installing Photo on precisely the same system which meets all requirements. I would be extremely grateful for any help anyone may be able to give me and thanks very much in anticipation, Regards,  Iain