Создай в Supabase таблицу button_clicks и разреши анонимные добавления:

create table button_clicks (id bigint generated by default as identity primary key, created_at timestamptz default now());
alter table button_clicks enable row level security;
create policy "public insert" on button_clicks for insert to anon with check (true);
create policy "public read" on button_clicks for select to anon using (true);