Have gone through comments in previous issues.

A ) Tried this code snippet, but subscribe function hangs the terminal. Pls suggest way forward.

Last login: Wed Apr 15 00:44:28 on ttys000
homes-MacBook-Air:epubnub Shlok$ ./rebar3 compile
===> Verifying dependencies...
===> Compiling epubnub
homes-MacBook-Air:epubnub Shlok$ ./rebar3 shell
===> Verifying dependencies...
===> Compiling epubnub
Erlang/OTP 17 [erts-6.3] [source-f9282c6] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]

Eshell V6.3 (abort with ^G)
1> observer:start().
ok
2> application:ensure_all_started(epubnub).
{ok,[jsx,idna,hackney,epubnub]}
3> epn_example_client:start_link().
{ok,<0.862.0>}
4> epn_basic_examples:publish().
{[1,<<"Sent">>,<<"14290398150714966">>],#Ref<0.0.0.5323>}
5> epn_basic_examples:history().
** exception error: bad argument
in function bit_size/1
called as bit_size("10")
in call from epubnub:'-bin_join/2-lbc$^0/2-0-'/3 (/Users/N-Exchanges/dropbox/gito/epubnub_chat/deps/epubnub/src/epubnub.erl, line 252)
in call from epubnub:bin_join/2 (/Users/N-Exchanges/dropbox/gito/epubnub_chat/deps/epubnub/src/epubnub.erl, line 252)
in call from epubnub:request/3 (/Users/N-Exchanges/dropbox/gito/epubnub_chat/deps/epubnub/src/epubnub.erl, line 241)
6> epn_basic_examples:time().

** exception error: bad argument
in function hd/1
called as hd({[14290398465791471],#Ref<0.0.0.5363>})
in call from epubnub:time/1 (/Users/N-Exchanges/dropbox/gito/epubnub_chat/deps/epubnub/src/epubnub.erl, line 212)
7> epn_basic_examples:publish().
{[1,<<"Sent">>,<<"14290398904564684">>],#Ref<0.0.0.5412>}
8> epn_basic_examples:subscribe().
<< Hanged >>

B ) Secondly, shouldn't init( [EPN] ) in line 47/48 in -module(epn_example_client) be <<"hello_world">> instead of "hello_world"?