I received an 8vape e-mail yesterday or the day before, where they're offering a $40 gift card in exchange to have them test a new mail service by sending you a gps tracker and then having you mail it back. They're amidst trying out new services and it's likely a logistics nightmare. Sit tight.
Patience is key when it comes to vape gear in general, especially right now. But as stated above - they've always come through. Are you in e-mail exchange with them to at least get an update on what's happening? I would recommend being cordial - you're more likely to receive better feedback. Spam is also not recommended, lol.
Random Trustpilot review: "I've sent 17 e-mails to them and no reply today! This company sucks!"