Check the awning fabric to make sure it is not laden with moisture. A saturated awning is harder to retract than a dry one. Allow the awning time to dry before trying to retract it again.
Spray down the roller pins with a dry lubricant. Apply the lube directly onto the metal connection points on the pins and where the awning attaches to the pins. Allow the lubricant to penetrate the mechanisms and engage the retracting functions.
Pull down the front of the fabric. Assign an assistant to stand at the opposite front corner as you hold the other. Pull the fabric down in unison to release the rolling mechanism. Like a window shade, an awning occasionally will be extended too far out, requiring a tougher pull down to engage the retracting rollers.
Loosen the attachment points at the awning housing with the screwdrivers. Pull the awning off the RV. Hand roll the fabric into the awning tube by assigning an assistant to stand at one end while you stand at the other. In unison, re-roll the awning fabric and reattach the awning to the RV.
Pull the awning out half-way and then retract it into the housing. Many times, hand rolling it will re-engage the awning roll mechanism.
