The topdress dogma age probably isn’t the issue most quality amendments last 1–2 years if stored dry and cool, so 1.5 years is borderline but usually still active. But looking at your plants, that yellowing is classic nitrogen deficiency, not old amendment. Here’s what likely happened: you topdressed 10 days ago with organic matter (dogma + hummus + tea), but organic amendments take time to break down and release nitrogen. They’re working, just slow. You’re in that lag phase where the old nutrients have been used up but the new ones haven’t kicked in yet.
What to do: Give it another week or so. The tea flow should help, but be patient with organics they move slower than synthetic. If the yellowing gets worse (spreads down the plant), you can side-dress with some fast-acting nitrogen or brew another compost tea to speed things up.
If it stabilizes in 7–10 days, you’re fine and the amendment was good. If it keeps getting worse, then the topdress might be too old or the compost is weak