same issue here,
after updating the module, the block disappear from my product pages, after uninstall it and reinstall the issue is still here.
customer reassurance : v.4.1.1 / prestashop up to date (as of 10/22/2019)
steps are :
1/I go to module and select customer reassurance, then i choose "configure"
2/in "actions" i slide the cross from deactivated to activate then i go to the pen for editing
3/choosing a logo (i have 6 time the same bloc to fill 6 logo, 6 titles, 6 description to fill) it seems to change after uninstall and different tries. the more i try the more i get a new bloc inserted in 1 bloc
4/ filling the info (free delivery in 48h, bla bla bla text) title + description
5/ trying to click save and nothing happen (i'm not in a multi shop, just 1 selected) i can't click save.
it even messes up my picture on my front end product page, my payment logo is going up onto the description of the product
see video here
edit : it seems it came from the last update of prestashop, i was not up to date and now that i am this module does not work.
Any idea how to fix this ?