GM!
Is anyone else experiencing shortages with the Testnet4 canister?
It looks like Bitcoin Testnet4 is suffering similar issues as Testnet3:
And with ridiculously high fees:
Which brings me back to suggesting Signet as the only reliable option for a testing environment: Bitcoin Signet support 
Testnet4 is currently experiencing issues with many competing branches, making it difficult to determine the main chain.
Our recently deployed Bitcoin Testnet Canister initially required strict synchronization within 2 blocks. To improve availability, we’ve loosened these limits slightly.
However, this means transactions sent to blocks that appear stable may later be overridden by competing branches. Keep this in mind when testing.
