I am T3 subbed to a channel. If I cancel my subscription I can keep the benefits until the month is over.
If I now decided to resubscribe within that time period (before the old subscription is over) a message appears in the channel, saying that I resubscribed but with Tier 1. But neither did I resubscribe, nor was it Tier 1. I just cancelled my cancellation :)

This could lead to sub spamming, since I can cancel my sub and resub as many times as I want in that time period, but it would probably make a message appear in stream again and again, every time I do this.

A cancellation of the cancellation within the time period should not post a message to chat. And if it must, check for the correct tier!

Twitch support was great btw. I was on a channel and saw free sub message on popup and I was thinking maybe I earned it with hours watched, well I clicked it and it used by prime sub without adequate warning, imo. Naturally, I could not then spend my prime sub on the channel I normally do. That popup and lack of warning really upset me today, and I feel like it is almost fraudulent representation. If it said free with prime that would be different, but didn't say anything about that when it popped up, so frustrated. Please fix this twitch and don't display it like it is free. Needs to say something about prime, like with an asterisk or something please. I feel awful for everybody who is going to fall into this trap. I may be stupid, but am willing to bet I am not the only one who mistakenly did this, and others will unknowingly spend their twitch prime sub in this manner. I also feel terrible for the streamer, who is lead to believe I actually wanted to sub to her stream, just rotten feelings all around about this. Yuck

In the Settings Page Under Security and Privacy there is a setting to "Hide Progressive Gifter Badge and Gifts Given Count" when enabled it hides the number of subs you have given as well as you name from showing up in the leaderboard. This works fine until you gift multiple months(note worthy the total subs given is hidden but not the leaderboard). I assume because gifting multiple months to a user counts as more than 1 sub it tracks you in the leaderboard in a separate way. I honestly am not sure if hiding the user in the leaderboard should be associated with this toggle or a different toggle but obviously the inconsistency between the two types of gift is a bug. I personally don't really mind it but it would be nice if this was resolved and additionally if these behaviors where separated into their own toggle. Good Luck and Excellent Job you have a great application <3

EDIT: These subs only show up temporarily I am not sure if this is just client side or not.

PT/BR:
Neste comentário estarei relatando um Bug no sistema de subscrição da twitch no qual o usuário pode estar adquirindo uma subscrição de forma gratuita, de fato o usuário não estará pagando R$ 0,00 reais, no caso o mesmo irá adquirir a inscrição no canal desejado por meio do Google play, logo após receber o beneficio de inscrição no canal desejado, o mesmo usuário pode realizar o pedido de reembolso pela google play, desta maneira o usuário recebe o seu dinheiro de volta na mesma conta em que realizou o pagamento, porém a inscrição permanece no canal escolhido desta maneira a inscrição no canal se torna gratuita, e isso pode ser realizada diversas vezes, pode ser realizada com inscrição de presente também, este bug pode ser fatal para a plataforma, já utilizei mais de uma vez deste bug porém senti a necessidade de reportar para a plataforma, caso reste alguma duvida pode me contatar no e-mail: Gustavobaufleur@gmail.com

ENGLISH/GOOGLE TRANSLATE

In this comment I will be reporting a Bug in the twitch subscription system in which the user may be purchasing a subscription for free, in fact the user will not be paying R $ 0.00 reais, in which case he will acquire the subscription in the desired channel through Google play, right after receiving the subscription benefit in the desired channel, the same user can make the refund request through google play, this way the user gets his money back in the same account where he made the payment, however the subscription remains on the chosen channel in this way the subscription on the channel becomes free, and this can be done several times, it can be done with subscription as a gift too, this bug can be fatal for the platform, I have used this bug more than once however I felt the need to report to the platform, if you have any questions you can contact me by e-mail: Gustavobaufleur@gmail.com