I do.

After pushing it with viabtc, still it's not yet confirmed but it's just stuck about not longer than 30 min - 1 hr.

Try rebroadcasting it with the use of hex code for your transaction. https://www.blockchain.com/btc/pushtx

Follow the format.

https://www.reddit.com/r/Bitcoin/comments/7dtcpl/how_to_get_the_raw_transaction_in_hex_format/

What I do is just copy-pasting the TXID on the example format and replacing what's in it.