If you go to https://bitcoinfees.21.co/ then you will see that the current recommended bitcoin transaction fee is 200 satoshis per byte. Now this transaction(https://blockchain.info/tx/c400191316050a10aabb81df7ff08ba473eca048fa056eb5aaf465a940da9170) that you received has 120 satoshis per byte and all the others ones seem to have 120 satoshis per byte as well.

It is quite common right now for transactions to be stuck for hours on end, so don't worry. Even big bitcoin companies have issues like that.

My suggestion to you is that you try this tool here: https://www.viabtc.com/tools/txaccelerator/

Submit all your transaction IDs, fill in the captcha and your transaction will be included in the block that viabtc mines!