Swan-of-Avon

I have been off piste for a while due to a serious operation and find the "Download to GPS" facility has been replaced by "Download GPX" Have tried this to download caches to GPS but it just places them in a file from which I cannot find a way to send them to GPS. What do I do to send caches directly to my Garmin 650 ?

I have been an ordinary member since Feb this year and would like to upgrade to premium, but two basic questions:- 1/ I am in the UK, so how am I charged $ 30 In other words what is the conversion and how is it calculated? 2/There does not seem to be any security on the payment site so how can I be confident of not being open to fraud?