Access follows payment automatically, so this is nearly always one of three things. None of them needs you to pay again — and paying again is the one thing that makes it harder to fix.
1. The payment has not finished
Card payments can be confirmed a moment after your bank tells you they went through. Wait a minute and message the bot again: it re-checks your status.
2. You are looking at the wrong channel
Most creators run a public channel and a private one. The public one is the advertising; the private one is what you paid for. Check whether the bot sent you an invitation link — that link is the private channel.
3. You left the channel earlier
If you left the private channel yourself, the bot does not force you back in. Message it and ask for the link again; your subscription is untouched.
Still nothing
Contact Support with the creator’s name, the date and the amount. We can see the payment and the channel from both sides, and we will tell you which of the two is stuck instead of guessing. Please do not buy it a second time — a duplicate payment has to be refunded before anything else can be sorted out.