The big problem with this app is they use only one IP address and the whole information it's go out from one place and that's it the algorithms are so smart they immediately found who sent to who so you try to warm up your accounts you sent messages from one number to another but all messages go from the same place to the same place like a IP address I want you to understand that and they block you straight away they block all my 30 numbers I have 30 numbers with them and reconnect all the numbers all the time is just a headache. I'm really disappointed to use the system and every message to be sent through different IP address that's OK but when is sent from the same IP and is received from the same IP algorithms are so smart they get you straight away, five days you are out all your numbers are blocked very disappointed if they fix this things then it will work because the whole information will go from different places and if you need to warm up your accounts doesn't matter for a month that's OK it doesn't matter the point is to work, because I sent only two straight cold messages per day from account just two messages and the 2 messages there in my account just the receiver receive it as cold receiver message and they blocked me straight away and they block me when I start sending messages to my accounts as well.I open accounts I open them and I send messages manually no they block everything. WhatsApp algorithm is perfect and you couldn't overcome only if you use your or different IP address different IP addresses but they don't care they just have a cloud somewhere and that's it and it doesn't work.