If Electrum didn't throw an error during the creation or the broadcasting of the transaction, I can't see how Blockchain.com could've messed up an address like this. At the bottom right corner, is the bubble green or red? Try clicking on it, uncheck "Select Server automatically" and select another server but right clicking and selecting "Use as server".

If not, then go to the transaction details and go to Export>Copy to clipboard and go to https://blockchair.com/broadcast, paste and click Broadcast transaction. Be sure to select Bitcoin of course.