Hello,
Thank you for your inquiry.
I made a sample html to do a test, but did not find the problem you faced. To help us investigate your problem quickly and effectively, please provide your HTML file. You could attach it here or send it to us via email([email protected]).
In addition, according to your email, I only found that you purchased our Spire.XLS on December 25, 2016. Kindly note the Spire.XLS and Spire.Doc are two different products. The conversion of html to pdf you used belongs to the functionality of Spire.Doc rather than Spire.XLS, hence you have to own a Spire.Doc license to eliminate the evaluation warning generated by Spire.Doc. You can apply for a temporary license of Spire.Doc (one month free) from this link: https://www.e-iceblue.com/TemLicense.html. If your purchase information we searched is wrong, please provide your order number or purchase email for our reference. Thanks in advance.
Sincerely,
Annika
E-iceblue support team