Interac says it's experiencing new intermittent issues with its e-Transfer service after restoring service overnight due to an earlier problem.
Spokeswoman Caroline Hubberstey says that while the company had fixed the previous glitches, it is seeing some issues again and working to resolve them.
The problem is again mainly affecting deposits, although a few financial institutions were having problems sending funds overnight.
Hubberstey earlier said most people were able to send an Interac e-Transfer, but when the notification for deposit arrived at the receiver, the receiver was unable to deposit the funds.
Several people took to Twitter to express concerns that payments for such things as rent may not go through, or concerns that they may be hit with NSF charges.
Interac said it had received some concerns about fees but would be working with financial institutions to address them.
It's also working to confirm the root cause and working with its financial institution partners to ensure that clients do not incur any fees.
The initial countrywide service problems were first noticed Tuesday morning.
Interac said its services — Interac Debit, Interac Cash and Interac Online — were operating normally.