I had my TRV approved the 1st time, it was really easy; I made all the process through the cic website, ust uploaded my passport, US visa and the forms, it was approved in just a few days.
Re: Visitor Visa Rejected - Please help advise
Just say they are staying for a shorter period, like 2 or 3 weeks max, when they get their TRV they can stay up to 6 months