this doesn't make sense.
1) it is not required for sponsors to be employed to be approved.
2) if you are married (not commonlaw), then it is not required for the sponsor and applicant to live together. this is only for if you are applying as a commonlaw couple, meaning you can prove you've cohabitated for at least 365 consecutive days. Married couples do not need to prove this. they need to prove their relationship is real and known to other people. almost all married couples have not lived together at the time of the application and are successfully approved.
Unless i am misunderstanding what you wrote, I'm guessing there must be more to the rejection than what is stated. Or you are not understanding the reasons they gave you correctly.
In regards to reapplying, it would depend on when you were married and what proof you have about your relationship. if you have nothing different than what you sent in with the first applicaiton, then reapplying would just lead to another rejection. there is no "rule" about how long you have to wait. you just want to be sure you have substantially more proof this time around to answer the concerns of the visa officer and why the last application was rejected. The responsibility is on the sponsor and applicant to supply plenty of evidence to support the validity of the relationship. It sounds like they are concerned the relationship is not ongoing. the only thing you can do to change that is to spend more time gathering evidence that it is still ongoing.