Hi @fatbob01and welcome to the forums 
I am assuming no issues previously for both poller and graphs, let me know if that’s not the case
Have you tried to validate the installation after pulling the new image?? (Page 2 of tutorial)
The validation should tell you to run ./lnms migrate (In Docker bash)
If you run into problems don’t forget to copy/paste or screenshot the logs (you can safely ignore the setfcl errors as Synology does not have setfcl)