Based on VPS Win 2 package, can I increase the Memory from 512MB to1G?
It depends on the provider. Why you’re asking here? Contact your customer support. But If you can’t and that’s the reason you’re asking it here, I can recommend you to get the VPS in a different place. As it’s not the only problem that you will experience. Take a look at the prices here https://bluevps.com/ . It should be ok.
I suppose you can not do it neither you use an expensive vps nor if a cheap vps. Check again the specs of the package of your VPS win 2. But I guess you will only find out that the Virtual Private Sector is not suitable and can not host your actual package. I think the easier way is to choose another server. By the way, I recently heard about the advise to keep the server in one location and the back-up information in another one. One of my friends lost everything due to a fire at the location he kept his server…unbelievable, because he kept there also the back-up and lost everything! millions of dollars lost