Until now, SBS has only been broadcasting Australian, group and finals games on free-to-air, while Optus Sports has had exclusive rights to all other matches, charging $15 a month for the service.
Optus has sheepishly relinquished its World Cup streaming rights to SBS for a limited time as it attempts to sort out its beleaguered network.
Optus again apologised on Monday, with a spokesperson saying the technical team was "working around the clock to ensure that we are delivering an excellent broadcast service to all Optus Sport viewers regardless of the platform they are using to enjoy the tournament".
"I have spoken with the Optus CEO, Allen Lew".
"For those users now experiencing technical difficulties on Optus Sport, please enter your details into the 2018 FIFA World Cup app to watch the Costa Rica-Serbia game while our tech teams work to fix the problem", Optus Sport tweeted.
"[In the next] 24 hours, I think they'll need to take a good hard look at where they're at in terms of fixing the problem", Mr Ebeid told radio station SEN.
Australia's prime minister intervened on behalf of angry football fans on Monday (Jun 18) after a series of technical glitches marred viewing of the 2018 World Cup from Russian Federation for the third day.
Angry fans slammed Optus after fresh streaming problems during Serbia's win over Costa Rica.
"Optus did not identify any issues with our own network last night on the live stream", the statement read.
"I think if Optus continues to have problems then we might have a conversation about how we can help them further", Ebeid said. Optus is confident that it will be able to get enough Fetch TV Mini boxes into Optus stores to meet anticipated customer demand. Mr Lew acknowledged that clearly, there has been some damage, and that with new technologies like streaming in-demand sporting fixtures, there's always some risk.