It seems my wallet has a problem "out of sync" 7 day (s) behind.

It might be necessary to open the wallet with more rights. Have this report from Candy Erdmann on Slack:
" I have opened the program with full access rights and now its synchronizes"
Also, make sure to connect to v0.9.7 nodes. Here is a list for your bitmark.conf file:
addnode=108.170.1.134
addnode=139.162.122.138
addnode=139.162.128.92
addnode=139.162.232.242
addnode=169.0.84.73
addnode=172.104.157.27
addnode=173.255.252.140
addnode=204.68.122.12
addnode=204.68.122.40
addnode=216.240.168.226
addnode=216.240.168.227
addnode=216.240.168.228
addnode=42.118.134.98
addnode=79.143.180.57
addnode=85.10.51.66
addnode=94.189.240.43
addnode=94.23.33.83
addnode=95.90.243.191