I tried the tool you suggest yesterday but I had a message like "404 not found, this topic isn't archived".
It seems that you didn't follow
the guide posted by LoyceV.
The tool doesn't scrap all the threads automatically. You have to request it.
For making a request, you must post the link including ID of the topic you want publicly somewhere on the forum.
https://loyce.club/showall/1935098.htmlOnce I post this, LoyceV's tool should start to scrap that thread.
Of course, the thread has been already archived and you should have been able to see the outdated page at least. Something probably went wrong when you tried to see that page.
Edit:
All 121 pages were srapped.
LeGaulois, if it still doesn't work, CTRL+F5 may solve the problem.