Your 2nd fee is fine... however, it is spending an output from the 1st unconfirmed transaction 921bbe72909d8fd01c61735ad9d607cab816317f483ce99a7383874bb8a4d757 which is VERY large and only has a fee of around 49 sats/byte...
until that transaction confirms, there is ZERO chance your 2nd transaction with the decent fee will confirm. I'd suggest trying to accelerate that unconfirmed transaction first using the ViaBTC TX accelerator... Once it is confirmed, then your 2nd transaction with the nice 327 sat/byte fee should get a confirmation relatively quickly after that...
Note: You haven't done a double spend... you've attempted a "Child Pays For Parent"... and unfortunately, the two fees combined, don't make a great overall fee:
2439 bytes (1st trans) + 226 bytes (2nd trans) = 2665 bytes total...
0.0012 btc (1st trans) + 0.00074038 btc (2nd trans) = 0.00194038 btc = 194038 sats...
Overall Fee = 194038 sats / 2665 bytes = 72.8 sats/byte
EDIT: I managed to accelerate the 921bbe72909d8fd01c61735ad9d607cab816317f483ce99a7383874bb8a4d757 transaction using ViaBTC... hopefully they'll mine a block soon and it will get confirmed. Once that happens, the 2nd one should get confirmed pretty quickly with a 327 sat/byte fee
until that transaction confirms, there is ZERO chance your 2nd transaction with the decent fee will confirm. I'd suggest trying to accelerate that unconfirmed transaction first using the ViaBTC TX accelerator... Once it is confirmed, then your 2nd transaction with the nice 327 sat/byte fee should get a confirmation relatively quickly after that...
Note: You haven't done a double spend... you've attempted a "Child Pays For Parent"... and unfortunately, the two fees combined, don't make a great overall fee:
2439 bytes (1st trans) + 226 bytes (2nd trans) = 2665 bytes total...
0.0012 btc (1st trans) + 0.00074038 btc (2nd trans) = 0.00194038 btc = 194038 sats...
Overall Fee = 194038 sats / 2665 bytes = 72.8 sats/byte
EDIT: I managed to accelerate the 921bbe72909d8fd01c61735ad9d607cab816317f483ce99a7383874bb8a4d757 transaction using ViaBTC... hopefully they'll mine a block soon and it will get confirmed. Once that happens, the 2nd one should get confirmed pretty quickly with a 327 sat/byte fee