Thanks for your help! I tried 3-4 other hosts (such as service.iotasupport.com, iotatoken.nl, eugine.iotasupport.com, iota.bitfinex.com), and keep reattaching that transaction, but still no joy!

It keeps staying in pending state for many days now. I tried to make another [conflicting] transaction now, but they both are hanging in "pending" state.
All the new receiving addresses I try to attach to tangle, are also hanging in "pending" state. I am now trying to use the wallet with the same seed on another PC, but things seem to be staying the same.
Am I really the only one with such issue? Is everyone able to send/receive without problems now?
Will it help if I switch to full node?
CfB, could you please help with some advice?
No good thoughts on that. Extraordinary skills are required to get what the problem is.