14laobmsj3l5t6boxzcrrzrfhgpvhth1lz
This is case sensitive, it should be 14LAoBMsj3L5t6boxZCrrzRFhGpVHTh1Lz. You can ignore the size of the characters in Segwit addresses, but not in P2PKH and P2SH.
If the transaction is stopped in the middle
It is stopped for a few seconds in Bitcoin Core client, that kind of thing is client-specific behaviour, there is nothing to be done at protocol level.
Scammers are getting richer, all of my money is sent just one push.
You should never send all coins in one push. Also, sending some small amount first and checking if it is correctly received is a good idea. The amount 2.15 BTC is huge enough to double or triple check everything before sending, but some kind of stop can be added to the clients, not to the protocol.