Hi @haroonbro,
Sorry to hear about this.
As stated in 1.2.8.7.1, access to ACF Groups that don’t explicitly have the API REST option enabled is disabled by default.
You can either enable the API REST feature on the specific ACF Groups you wish to load on the frontend or simply go to Cwicly Settings → Advanced Settings → untoggle Require ACF API REST
I hope that helps!