Hello @oguido, thanks for getting in touch with us!
Please be informed that we are adding the ability to insert font awesome icons in the close button text in v1.10.
If you want an X, you can look at characters rather than icons.
Go to any of the following links below and copy the character (special letter type) and paste it as your close text:
https://en.wikipedia.org/wiki/X_mark
https://www.i2symbol.com/symbols/check
https://www.i2symbol.com/abc-123/x
I hope that works for you.
If you have anything else we can help you with, please don’t hesitate to email us back here. Thank you.
