Brevo PushOwl: Email,Push,SMS

I am facing an issue with shipping notifications and new product push notifications not working properly. It's been more than 3 weeks since I reported the issue, but still no solution. The frustrating part is that I am on the "Plus Bundle" plan which pays $38/month for priority support, yet the support has been very disappointing. I followed up several times, but have not received any meaningful help. If this continues, I may consider switching to another push notification app. I expected better for a paid plan. The funniest thing is that the negative reviews don't seem to bother the developer.