Hi @lengyeln,
Thank you for your query. We got the issue and it will be fixed in the future version. For a quick solution, kindly add the following custom CSS to show Google Calendar in Easy Accordion properly by going to Easy Accordion > Settings > Custom CSS.
.spcollapse:not(.show) {
display: block;
height: 0 !important;
overflow: hidden;
margin: 0 !important;
padding: 0 !important;
visibility: hidden;
}
And let us know if the CSS fixed the issue or not.