Crowdtap and their support

Hi, I was wondering if anyone has gotten in touch with Crowdtap customer support recently. It's basically nonexistent for me.

I was trying to redeem a $20 gift card as normal and they wanted me to verify it via the phone number on my account. My problem is that I no longer have access to it and wish to change it. In order to do that, I have to contact support but after several attempts over many weeks, no response.

Feel free to share any info if you have it.