I contacted support via email adress provided by you.
And...
14th of June I sent email to them.
They asked me about units (I have 3 of them. Two in Poland, one in Norway). Discribe that two of them are bricked after update. They asked if I can update 3rd one. I said NO. I won't fly to Norway to replace it in case if it is brick. Also I will loose access to VPN. So they wrote that they are going to send replacement. They asked for order etc... I provide it. From that moment no contact. I also send to them few more emails last week. Nothing. If i would replace 3rd one i couls be without 3 units and also no internet in 3 locations. Is gateway. No travel router. No competence at all with firmware testing and no after sale support. No contact. Nothing. Already have many units from GL-Inet. Soon migratong to Mikrotik. Same will do in first issue with units which I recommend to my customers. Nightmare and monkey business.