Hi m.qamaruddin,
no problem. I’ll try to help you.
1. Rename you logo-file to stempel.png
2. Upload with overwrite your stempel.png
file to your web-server via ftp to the path:
wordpress/wp-content/plugins/marekkis-watermark
That’s all.
maybe you have to reaload the pictures because of cache, but usually you can the your new logo after click the “save”-button on the Watermark setup-page.
Please note, you must repeat this procedure after each update of Marekkis-Watermark. But in one of the next version customer-logo should by installed permanently.
If you have changed your logo successfully, so please close this tread and rate this plugin! Thank You.
I wish your lot of success.
Marekki.