Comment text fields in form editor is not editable on mobile

Hi. I am an Android user. WPDiscuz is nice, but I have a problem when editing a form.

Comment text fields are not editable on my device. I can drag them but I can't edit the field.

To expand a field, I have to zoom in the pencil icon and tap it so many times until it opens. But when it opened, I can't edit the text box inside it. If the field has tickbox, I will need to zoom again and tap mumerous time until it marked.

I have tried on Chrome and Firefox. Also I tried desktop mode on both browser but still I can't do anything. I had to spin a vps on Vultr and install VNC, then access my website through it.

Is this issue fixable, or I will need to spend money whenever I need to edit the form?