Thank you so much, you are a lifesaver! I really, really, really appreciate it. I was not aware about the issues related to Blockchain's wallets and will definitely change it to something else. Any personal recommendations?
Have a nice day
Bad time = high number of transactions in network. Once it gets above 50k, viabtc's accelerator limit of 100 tx per hour is gone in a minute. Confirmtx seems to halt free service around 120k. Both anyway have requirements yours might not meet. Only antpool's will work in general but you gotta sign up with a verified phone.
If you read the sticky post I linked to above it explains in detail but just do 2 really quick things when you spend bitcoin:
1. Check network situation: https://blockchain.info/unconfirmed-transactions
2. Visit a fee estimator like https://bitcoinfees.earn.com/
Add some room on top of the estimate and you should get things done in a time that's fairly predictable.
I don't think blockchain's wallet is bad actually... I believe it uses dynamic fees and you can use advanced send to set it manually. But I've not looked back after switching to Electrum. Light and simple to use, just as secure with a great deal of control.