ERR_SSL_PROTOCOL_ERROR

Hello,

This might have happened If you have enabled https before installing ssl certificate on your cPanel.

Go to phpmyadmin on your cPanel, navigate to your WordPress database and wp_options table. Change your site url and WordPress url to https:// protocol instead of https://

Let us know if that fixes the issue

Ok, thanks! I changed it. Yes but I never could install the plug in.

@estefi Add the below code to very bottom of functions.php file of your theme in a new line. Load/open your site url once and later remove the below code. You will be able to install the plugin again after doing this.

function wple_remove_opts(){
delete_option('wple_opts');
}
add_action('init','wple_remove_opts');

Please open a support ticket in plugin support forum for any further communication/question. This is a review section ??

I did all these but didn’t work ??

https://uxuiblog.com/

Fix ERR_SSL_PROTOCOL_ERROR by clearing your SSL Stat
If neither of the above works, clearing your SSL State is the next thing you should try. Follow the steps below to do so:

First, go to Customize and control Google Chrome, the three dots you see just below the X (close) button.
Now click on Settings.
Scroll down the page and open the Advanced Settings.
Go to Open proxy settings by scrolling down or searching in the search bar.
A window named ‘Internet Properties’ will open up.
Go to the Content window and click on the Clear SSL State Button.
Note: I did the same steps for https://mymiseqweb.com/ my site and it got fixed!!

ERR_SSL_PROTOCOL_ERROR
When I change http to https, I am unable to login in my admin page then I just click back it will open the same window where I change it to https to http, but still not able to login.

I also tried to cpanel method i.e. login into cpanel >>> wpuser >>> edit >>> ….
But here already my url is like http:/…….com. Please tell me how I can fix this all

@ashish14299 SSL port 443 might not be listening on your server.

VirtualHost for port 443 (in case of apache server), Server{} listening at port 443 (in case of nginx server) might be not defined. If you have root SSH access, please check your server config file. Otherwise, you will need to contact your hosting support to enable SSL port on your server.