I've read that report, Clara & not only does it not provide any evidence against K & S, it doesn't support your claims either.
S made 3 calls (one to his sister, a police officer, and two to the emergency number) - these were ALL before the police showed up investigating the mobile phones. Once the police were there, K & S stayed with the group and did not lock themselves in the bedroom.
They never said they were using the laptop all night - they said they watched a film on it, had sex and went to sleep. This is consistent with the laptop not being used after the film had finished at 9.30.
There's no evidence of S switching his mobile on at 6am. A text was delivered to his phone at that time (that had been sent the night before) - but the delay may have been for reception reasons and not because that's when the phone was switched on.
The shopkeepers "evidence" has been discounted. Not only did it take him several months to tell the police this (in spite of being interviewed shortly after the murder) but the other person in the shop at the time does not corroborate his claim.
K was interviewed without a lawyer present for 50 hours. She ended up saying all sorts of things, including implicating Lumumba. If you read through what she actually says, it's all rather incoherent and disjointed, strongly suggesting intense psychological pressure rather than some kind of confession. If she was going to genuinely push the blame on someone else, Lumumba is the worst person she could have picked, given that she must have known he'd be in the bar at that time and could easily be alibied (as he was).
If all three (S, K & Guede) murdered Meredith, why did they not concoct a story together? Alibi each other, or at least get their stories straight? They had all night to do so, but seemingly didn't.
Why was Guede's DNA all over the scene, with absolutely none from S & K? It's almost impossible to walk into a room without leaving a trace of yourself, yet S&K managed to stay in the room long enough to participate in a very brutal murder without leaving the tiniest trace of themselves. Clearly the scene had not been cleaned since Meredith's & Guede's DNA was everywhere.
The only bit of evidence linking S to the scene was a tiny amount of his DNA on the bra clasp - VERY tiny. Guede's DNA was all over the clasp and the bra strap, so why such a minute amount from S if he'd handled it? This "evidence" has been completely discredited when it was shown that the police scientist who collected it used visibly dirty gloves to do so. It's very likely that S's DNA (found elsewhere in the house) was transferred that way.
This has been a trial by media yet again. Not only is there nowhere near enough evidence to have convicted them in the first place - I think it's plain that the two are completely innocent.