Choose any whole number from 50 to 100 in the Quantity field. The selected amount only applies to the single post you paste in. Three posts you want reactions on means three trips through the form, one link at a time.
The reactions themselves come from a fixed set of five: 👍 ❤️ 🔥 🎉 😁. All positive, nothing negative ever gets mixed in, and you cannot pick which ones land, since the system spreads them out to look like a believable mix rather than fifty of the same emoji stacked in a row.
On the limits: four hours per IP, twice a week and eight times a month per link. VPN and proxy connections get caught and blocked before they can submit anything. None of this is arbitrary red tape. A free tool without limits gets drained by two or three people within an hour of launch, and then it stops being free for anyone else.
One more thing people ask about: no, this does not run on some cut-down free version of the service. It is the same delivery source behind the paid reaction packages, which is also why the count does not quietly fall off after a few days the way lower-quality tools tend to behave.