I have had that happen with me, but I think it was "not enough harmalas" when I did it. Pharmahuasca is tricky, the MAOI has to start working then you have to get a sufficient dose of DMT (I've seen suggestions as low as 80mg up to 200mg on the high end).
I did mine by boiling I think the rue wasn't strong enough the first time, but by the second time I was "way too far", heh quit a lot of bad habits that night, but it was spooky and I regretted going back twice in the same day. (My reason for double dosing was I only had 1 day and the first time failed).
In the end it really may be what you think, it's very possible that the "extraction" isn't as pure as you think. Though from everything I've read (and if I remember correctly) most even highly colored extractions are in the 85+% DMT range. Has it worked before ever? Have you tried other ROA's with success like smoalking?
I hesitate to say "eat more". It does seem like you did everything right. I have 0 experience with boofing, so not sure. Is it possible the capsules released at off times?
Pharma/Aya can be extremely internal as well. Where in a crowded space it can seem tame as you are distracted, but the more interal you go (sitting with your thoughts in the dark alone silently or with icaros), the more it seems to take effect.
Good luck.
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