Autoflower Problems. Help!

Hello, maybe somebody can help me and knows what could be going wrong with my 2week old bluematic autoflower plant. The most similar problem to this one I could find was potassium deficiency , but I'm not so sure.
The soil its growing in is just ordinary soil for plants bought in near gardening store. I did give 1/4 of recommended bio-grow biobizz nutrients one time, maybe 5days ago, I did it too early probably but could it be nute burn?
The water I was watering with I did try to keep ph 6.2-6.8 range , every time little different.
Thanks in advance!

Have those leaves been hit when you were fertilising

Poontanger said:

Have those leaves been hit when you were fertilising

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I'm not 100%sure but I think I didnt, the thing is Its been happening like 3days probably and it's just getting worse, at the beginning it was just the first lower leaves that turned this way and died, now its climbing upwards and I see the most top ones are getting little damaged, dont wanna lose the plant.
Thanks

Whats your grow medium? Brownie batter? you look to have poor soil aeration. How those roots able to breathe? I'd say over watering...

your soil looks super wet and has not a spec of perlite in it not to mention your leaves are droopy... browning leaves...

TropiKanna said:

Whats your grow medium? Brownie batter? you look to have poor soil aeration. How those roots able to breathe? I'd say over watering...

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Its my first time grow and yh I rushed a little n should have put some perlite in it. But about overwatering , it's so wet just because I flushed it today in hope this would atleast slow it down giving me time to fix it.

You are rotting your roots which is why it's like that.... flushing is making it worse because your soil has no drainage! I would mix a new batch with a good amount of perlite and try to transplant and leave it alone till the soil and root ball dry out. Im surprised you don't already have fungus gnats

TropiKanna said:

You are rotting your roots which is why it's like that.... flushing is making it worse because your soil has no drainage! I would mix a new batch with a good amount of perlite and try to transplant and leave it alone till the soil and root ball dry out. Im surprised you don't already have fungus gnats

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Okey , i understand , i Will do my best to fix it ,Thank you @TropiKanna