Keep in mind that sometimes the DHS issues a blanket automatic extension of the expiring EADs for TPS beneficiaries of a specific country in order to allow time for EADs with new validity dates to be issued. For certain TPS beneficiaries (those with EADs containing the category codes A12 or C19), while the I-797C, Notice of Action, is not required to receive the blanket TPS extension, the I-797C will be required in order to benefit from the 540 day automatic extension. TPS is made even more complicated by ongoing litigation affecting certain TPS countries. Hopefully the USCIS will address those affected by the Ramos litigation for countries that have or have not been redesignated.
Another thing to remember is that for TPS beneficiaries presenting an EAD and I-797C Notice, the Notice must contain either the A12 or C19 category, but the category codes do not need to match each other.