Here are some actions to take in regards to your tradeline:
1. How long has it been since you received the email your rent was reported before you checked your report? TransUnion and Equifax take ~ 2 weeks to update your report and Experian can take 30 days to update.
2. Did you check with the individual bureaus themselves or a third-party service? We can not verify third-party services such as MyFico, CreditKarma, CheckMyScore, etc. You must pull a report from the credit bureaus themselves.
3. You may not see the tradeline if you have a fraud notice set up with that particular bureau.
4. If after the first three you still don't see it please call the bureaus themselves to inquire:
Transunion: https://www.transunion.com/customer-support/contact-us-consumers
Equifax: 888-407-0359, option 1
Experian: (888) 397 -3742