Hi Jason,
Thx for your quick response. I found the problem in the meantime.
Was of course not a eCard problem but a conflict in the css style sheet. So just in case someone would run into the same issue:
The following code in my css style sheet created the conflict with the form checkbox. After disabling the first line of the code (-webkit-appearance: none;) = the checkbox displays perfectly.
input, textarea {
-webkit-appearance: none;
-webkit-border-radius: 0;
border-radius: 0;
}
Best,
AJ