How to unblock and talk to someone who blocked you on WhatsApp
Whatssap
Has someone blocked you on WhatsApp? There is no specific or magical way through which we can make your contact unblock you on WhatsApp. However, there are some simple steps through which you can communicate with the person, and if things go well, you can lift the ban.
Before starting the method, it's a good idea to spend a few minutes and think about whether that person has really blocked you or not. Sometimes people are busy or don't look at their phones. Just because someone doesn't answer your messages quickly doesn't mean you're blocked.

If someone has blocked you, it may be in your best interest to wait before contacting them again. Sometimes a friendship needs time to heal before it can work on rebuilding
You can talk to this person through a group
Has someone blocked you on WhatsApp Group messages can be fun, but they can also be annoying when you receive a new message every two seconds. But if you are in a group with the person who blocked you, you will be able to contact them.
Although WhatsApp
It has created a way to block direct messages between users, but it does not do so in group chats. So if the person who blocked you is in the same group, you can always send a message across the group for them to see. If the person who blocked you leaves the group, this won't work. Follow the second method below.
To unblock the person who blocked you directly without any group and return to communicating with everyone who blocked you on the WhatsApp application normally, as if he had not blocked you. This method requires deleting your entire WhatsApp account. Go to “Settings” and from there go to “Account.” Account, then choose Delete my account. See the images below with the remaining steps.
How to unblock me on WhatsApp
Disclaimer:

WhatsApp™ is a trademark of WhatsApp Inc.
Recover deleted WhatsApp conversations and messages
It is not affiliated with WhatsApp Inc. Or sponsored or endorsed by it.