Manual payment

Yes, you can use the Pay by Check addon to do this. After your user checks out and is approved, you will have to change their membership level via their Edit User/Profile page.

when we put this file and activate as plugin ,it give such msg The plugin generated 2 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

As long as that notice goes away after activation and everything seems to be working properly, you don’t have to worry about that notice.