Also you can register mail on any public mail server (gmail, yahoo, etc...)
Stable version: possible to create all accounts on one mail.
Dev version: you can create/find module that supports ton of mails or use feature from stable.
IP disallowed or banned / endless captcha
In all of this cases you need to change your IP.
Solutions:
If your ISP getting new IP to you at any reconnects to their network, you can use this method (acceptable in case you're creating 1-20 accounts)
Use proxies. Note 1: You need to test imported proxies before use them!
Some proxies don't work good (or just don't) and can broke something or cause crash app.
Nothing is working! / All crashes / App won't start! / etc
Dude, that's sooooooo informative!
Can you explain how it's not working and send full log to me (for example telegram or new issue)?