SECJ0369E: Authentication failed when using LTPA. The exception is

Check if following is correct based on the repository setting:

<config:supportedEntityTypes defaultParent="o=testOrg" name="PersonAccount">
<config:rdnProperties>uid</config:rdnProperties>

Check if defaultParent and config:rdnProperties have correct values.

Try cleaning up temporary folders :
wp_profile\temp
wp_profile\wstemp
wp_profile\tranlog

This might resolve the issue if all the configuration seems correct.