It's ok. Please remember, once you make a Timeline (TL) entry, it will not be reflected in the webpage immediately. It will stand waitlisted till it gets verified and approved by a TL Monitor. So, once you make an entry, kindly wait for a while till its verification.
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You are also given the option to challenge against a wrong stamp. TL Monitors are after all human beings and can make mistakes. If you believe that your entry was valid. Yet your entry was voided (rejected), you can report it to the Forum...
more... Monitor Group, who are supposed to scrutinize your complaint, and reconfirm it again in case the previous stamping was wrong. Thank you.