how to rollback to ae cc 2019 (version 16.1.3)

[원철이82624246]

hello, thanks for your time. 

I want to rollback to older version of AE. 

but my creative cloud doesn't look support 2019 version anymore. 

is there any good way to solve this problem?? 

yes, I tried link for detail down bellow of list. ( for much more older version) 

but, it says I have to enter serial number, and it keep turn back error message

any simple and good solution for this?? 

thanks again. 

[Mylenium]

I'm not clear what you are saying. Have you actually checked your CC app? What system are you on?

Mylenium

[filips97187540]

How much more clear he needs to say it?