I was able to work around it by just putting the envelop in the back rather than trying to pair it with the RSVP card.
Ugbu a, enwere m ike ịgbakwunye na ederede di na nwunye n'okpuru ihe ọ bụla eserese kama ịnwe ka ha kwụ n'akụkụ sidebar site na iji wijetị RSS.