Thank you for your purchase and apologies that you experienced some problems. Regarding the support ticket you opened two days ago, it is still open and we made a reply about 20 minutes after you posted it. I'll copy the contents of the support ticket for you here:
Anyway, to figure out what's causing it, let's start with the plugins first. Navigate to your wp-admin > Plugins > admin area, and deactivate all your plugins except for wpStoreCart. Now navigate to wp-admin > wpStoreCart > Settings > and try saving your settings. If saving settings now works, then your issue is a plugin conflict. The next step is figure out which plugin is conflicting with wpStoreCart. To do this, activate 1 additional plugin, and then re-test wpStoreCart. Repeat until wpStoreCart no longer works, which indicates that the last plugin you activated is the conflicting plugin. Once you figure out the conflicting plugin, please update this ticket so we can try and release an update to wpStoreCart to fix the incompatibility.
Let us know it how goes. We're here to help.
You also had a previous support ticket from July 18th, where you said that the update had knocked out your WordPress install. We visited your site, and it, as well as the store worked perfectly, so here was out reply before closing that ticket:
The only changes in 2.5.33 were updated .jpg images, so it sounds like a server to server connectivity issue between your server and WordPress.org. It looks like you resolved the issue.