WAREZ-BB-V3

Hi, I don't download much, and have even less to share. But recently the need has changed. About 30 files 1GB each need downloading.
. I searched the web, hoping to find 'how to use' tutorial. Nothing related to the process for downloading to PC. Weird.
. So, I look at Alldebrid since they have 7 days free trial. Great. I can test prior to subscribe. Not so fast. I could not pass pass the SMS thing. No matter what I do, it said invalid number. My phone number is real & valid though. I used the international format (xxx) xxx-xxxx as instructed.
. So, I went to Real-Debrid since someone from Reddit said it is better for direct download. I don't know what the different between direct download vs torrent download, but I gathered that direct download would apply to me better.
They accept credit card purchase. So, it is good.

Please help me to understand these:
<1> What will happen after I made the purchase? I suppose that they would provide some code (?), how will I use to start downloading ? I normally use Firefox browser to download. Sometimes, mipony.
<2> I intent to purchase 90 days. At the end, will they remind me to renew, or they would automatically renew and charge me to the end of time (I would not like this at all!)

Thanks

1. When you Purchase Maybe They gives you Login Credential. Debrid Works like that - Grab any Links and Put on debrid account They convert to you Direct link. That link you can directly download through Browser or Any Download Manager .
But not Unlimited download for All Hosts. They have Limitation . Example - RG - 30GB Limit , Nitro 20GB Limit like that .

2. you Can Choose Option , you Can stop Auto renew option . I used Debrid long time ago so Not remember Clearly