The 26 character key is what sets the features for the various versions of DASYLab (Lite, Basic, Full, Pro, or Runtime).
certainly.
this folder: https://mcc.download.ni.com/#Archive/DASYLab/DASYLabV13/
this is the download I recommend: https://mcc.download.ni.com/Archive/DASYLab/DASYLabV13/DASYLab 13_0_0a.exe
Depending on the MCC driver you used (check your development computer, DASYLab 13 configurator, installed drivers):
https://mcc.download.ni.com/#Archive/DASYLab/DASYLabV13/MCC-DRV all V13/MCC-DRV_13_4/
or
https://mcc.download.ni.com/Archive/DASYLab/DASYLabV13/MCCDAQ-Classic Driver/mcc-classic.13.0.0.632.en.dlp
to be clear, to make the runtime run like the original, use the MCC DASYLab driver used on the DASYLab 13 installation.
Easy way to tell is to run DASYLab 13, go to the modules >> inputs/outputs.
If the folder name is MCC-DRV use https://mcc.download.ni.com/#Archive/DASYLab/DASYLabV13/MCC-DRV all V13/MCC-DRV_13_4/
if the folder name is MCCDAQ (or similar) use https://mcc.download.ni.com/Archive/DASYLab/DASYLabV13/MCCDAQ-Classic Driver/mcc-classic.13.0.0.632.en.dlp
still not sure? Send me a picture of the configurator, Packages tab with Data acquisition tree expanded so I can see the list of drivers you have installed and their rev numbers.