Your listing, @Trish171 , is beautiful and well-liked by your guests. I am in a similar predicament with the family collection in that Airbnb won't approve me due to a single missing piece. In my case, I don't allow infants. Never mind that all other children are allowed and we have 5 star ratings from our guests – including a number who brought children.
I have made the decision not to worry about being a part of the family collection because I continue to have guests who bring children & teens. Also, guests can see from previous reviews that they are allowed and the families had good experiences.
As for providing WiFi, I generally agree with @Ana1136 and @Susan1188 that guests are expecting it. However, I also can appreciate your efforts to "detox" guests as part of the retreat experience. Therefore, if you are going to continue this approach for your listing, I would be more explicit in your description AND confirmation message to guests. State repeatedly that there is no WiFi provided during their retreat. While you don't include WiFi in your amenities list, most guests don't read it and they are probably surprised by the lack of service when arriving.
Having statements of support from guests in the reviews would help too! After my visitors check-out, I send a follow-up message of thanks and include a statement about completing the review. In it I ask them to also comment on a unique feature that I provide. That helps to highlight it in my reviews
Otherwise, if you decide to go ahead with WiFi, you can also survey those who book as to whether they would be interested in an booking experience without it. Perhaps you turn off the service for those who request a "detox" weekend.
Let us know how you decide to proceed.