Hey! thank you! I was able to link my application.okay,
1. Dont use option of link using "Application Number". The application number here means PR card application number which starts with letter R
2. Use option using something like -- "UCI and Last name ". Also enter place or birth as CITY,(SPACE)STATE (if you hold an Indian passport)
1. First, I chose "Permanent Resident Card" from the category.
2. Then I did what you mentioned.
In the attached application (starts with R) messages are empty.