From my understanding, there is a limit for how many Private Messages can be sent per day, but if you contact the Administrator of this forum you can have that limit increased.
The easiest way to contact the Administrator (forum name "sb56637") is to click on the "Contact the admin" link in the "Main Menu" shown at the upper left side of each forum page. Doing this will allow you to send a PM to the Administrator requesting the limit increase.
Thanks again for this generous offer and I am looking forward to receiving my discount code for the IF22A.