[1] Support is still available only during our standard working time (9 AM to 6 PM GMT+4). We can't guarantee answers at other times and during weekends. However, your questions will have a higher priority and will be addressed first. If you open multiple tickets at the same time, we'll address them in the order they were received, unless one of them is clearly more urgent.
[2] We can upgrade the store for you only if you have an active upgrade subscription (or lifetime upgrades). Note that we don't adapt third-party add-ons, themes, and code to the new version.
[3] We'll reply to questions about the CS-Cart and Multi-Vendor functionality or how to set it up directly in the chat. For other questions, we'll create a ticket in Help Desk on your behalf and reply to the associated email address. We do it to preserve communication history and because it takes longer to process more complicated requests.