Waiting for renewal for Sept haven't received. Has anyone else have this problem?

You should check with your municipal tax collector to see if they have placed a block on your registration due to an unpaid bill.

Not helpful

Does that mean your registration expires at the end of September or did it expire at the end of August It did if it did expire in August then you should head to AAA or to the Rhode Island DMV or any satellite location as soon as possible in order for them to print out your renewal I have no evidence or inkling that anything has gone wrong unless it was lost in the mail if it's a September expiration date then certainly you have no worries for the next 20 days Plus I'm wondering if you could stop at your local police station and ask them to run your registration if in fact it's been renewed successfully then you just need stickers for your plates and you can apply for a duplicate registration online