You can access viaBTC TX accelerator without logging in check this link below.

https://pool.viabtc.com/tools/txaccelerator/

It seems that your transaction fee is too low and ViaBTC(free service) is accepting only a transaction which have 10k sat fee so if you use their service it won't work but you can use their paid service.

Which wallet do you use?

They ask to create an account. Why can't you access it? Just know that it takes ViaBTC a few hours on average to find a block.

That's what we're here for

I don't think there are any working accelerators left for low-fee transactions.

This should work:
Can you use "CPFP" (Child Pays for Parent)? Use the funds from one of the 2 receiving transactions, make a new transaction with the full balance to one of your own addresses, and set 0.00025BTC as fee. That should be enough to cover the fee from the current transaction and the new transaction, and a miner should confirm both transactions at once.