And it is just 300 x100 px 
How can I change this?
Thank you.
Hi @maeria,
I hope you are well today and thank you for your question.
Could you please share me your site URL where it’s happening so that i can troubleshoot it?
Best Regards,
Movin
Header logo. Thanks so much!
www.honoryourheart.center
Maria.
I visited your shared site and saw the header logo image is not of 300 x100 px size but greater than it which you can see by visiting the following URL.
http://honoryourheart.center/wp-content/uploads/2017/04/cropped-logosmall-01-1.png