Why can I only whitelist 3 subreddits?

If you can only whitelist 3 subreddits, your account is most likely on the New tier.

The New tier includes 3 active subreddit slots. Those slots decide which account-level subreddits can stay active at the same time.

Subreddit slots are limited because each active subreddit adds operational cost, delivery risk, and monitoring complexity.

A small starting limit keeps new accounts focused on the subreddits that matter most instead of rotating through many communities too quickly.

This is the most common point of confusion. Auto Voter whitelist mode controls where automatic orders can trigger for a profile.

Account-level subreddit slots control which subreddits can stay active under your account capacity. If your account has 3 included slots, only 3 included subreddits can stay active at the same time.

Use the Subreddit Priority List to protect your most important communities first. Priority 1 is safest because it stays active before lower-priority included slots if capacity changes.

Put client, launch, revenue, or evergreen campaign subreddits above experiments. Keep weak test subreddits out of your active slots until you know they are worth the capacity.

Your included slot count can increase when your rolling 60-day deposit total moves into a higher tier.

You can also use paid extra subreddit slots for short-term campaigns. Paid slots are separate 30-day subreddit slots and do not replace your included priority list.