I just opened Cakewalk by Bandlab and received the following message: "Cakewalk will go into Demo Mode in 13 days. Login to BandLab Assistant to update activation status before time runs out." 
 
So I logged into BandLab Assistant, but I didn't see any options to "update activation status." I've closed and opened the DAW several times and the warning message still appears. 
 
Any thoughts on what  I should do? 
 
Thanks for the help.  
 
EDIT: I managed to solve the problem (had to click on the gear icon to update activation status.)  

I have this problem too but I can't find where to renew membership. If I open the Bandlab app and click the gear icon there is no option to renew. CW is now opening in Demo Mode.....
 
Please advise

You didn't mention what product you're using or what process you're using to authorize the product.  That's important as, based on the program and it's vintage, you may need to enter authorization codes or use an authorization utility program.
 
You may find it easier to bypass all that by downloading and installing Cakewalk by BandLab.  The new program does not overwrite your existing program but instead installs beside your existing program.  You can use all your existing Sonar / Cakewalk content as long as the content is 64 bit as Cakewalk by BandLab does not support anything 32 bit.

I forgot to provide the download link.  It's here:  https://www.bandlab.com/products/cakewalk