Download links are usually sent within 15 minutes to the email address associated with your PayPal account (make sure that email address is still functional!). Due to time zone differences your link may not always be sent instantly. However, you will always receive your download within 8 hours.
The SP single user license allows installation on up to three of your devices provided you are the sole person that's using the program. You are entitled to free version updates. The SP perpetual software license allows lifetime use of the product without any additional costs or hidden fees.
SP is primarily designed for Dragon® Professional Editions (DPG, DMPE, DPI 14/15 and earlier) because these version support importing of the SP voice commands. However, most of the modules will also work with Dragon® Home/Premium Editions. Several of the modules will even work with cloud-based DPA/DMO versions (by creating simple step-by-step commands to the SP executables).