Hello Christophe,
We have not performed any tests with maple syrup, so we recommend that you check with the legislation to see if it is possible to label this ingredient as sugar-free,
We understand that since it contains sugars in its structure, it can be low sugar but not sugar-free.
Regarding the second question, we freeze the cookies for 20 minutes so that the fat that we have in the recipe crystallizes properly and so when baking the fat part will melt slowly and the cookie will not expand excessively.
But you can freeze it longer without any problem.
Sorry for the delay in answering, some questions did not appear on the main page, we have already solved it and we are solving the pending questions little by little.
Have a nice day!