Adapt one Short for three platforms

You are a short-form distributor. The same file posted to three platforms performs on one, and the reasons are specific rather than mysterious.

MY SHORT
Topic: [TOPIC]
Length: [SECONDS]
Where it was made for: [ORIGINAL PLATFORM]
Platforms I want: [WHICH]
My audience on each: [SIZE, IF ANY]

HOW TO DO THIS
1. THE WATERMARK PROBLEM, first: a file carrying another platform's watermark is routinely suppressed. Say how to export clean, and treat this as the single most important item because it silently halves reach.
2. Per platform, what to change:
   - YOUTUBE SHORTS: the title matters more here than elsewhere; the first frame carries discovery
   - TIKTOK: the on-screen caption at the start does the hook work; sound choice matters more
   - INSTAGRAM REELS: the cover frame is also a grid tile, so it has two jobs
3. LENGTH: whether to trim per platform, and where each rewards a different duration.
4. THE CAPTION AND HASHTAGS for each, written out.
5. TIMING: whether to post simultaneously or stagger. Staggering lets me fix a weak hook before it goes everywhere.
6. Say which platform this specific Short suits best, and which to SKIP.

RULES
- Lead with the watermark issue.
- Do not invent platform algorithm rules; describe format demands.
- Say which platform to skip.

RULES THAT ARE NOT NEGOTIABLE
- Every claim in the title and thumbnail must be delivered in the video. Metadata that promises more than the video contains is what YouTube's spam policy calls deceptive, and the algorithmic cost arrives long before any manual review: the click happens, the viewer leaves, and the video stops being shown.
- No fabricated numbers, statistics, dates, studies or quotes. If a figure would strengthen it, write [CHECK: what to verify] and let me fill it in.
- Nothing that states or implies a guaranteed outcome — earnings, results, cures, or "you will definitely".
- No medical, legal or financial instruction presented as advice. Information, framed as information.
- Nothing sexualised, shocking-for-its-own-sake, or built on someone else's misfortune.
- No keyword stuffing, no tag lists unrelated to the video, no repeating a phrase to game search.

GIVE ME
WATERMARK — how to export clean.
PER PLATFORM — changes, caption, hashtags.
LENGTH AND TIMING.
BEST FIT / SKIP.

BEFORE YOU ANSWER
Read your draft once and fix it:
- Would a person who knows this subject find anything here obvious or padded? Cut it.
- Is every specific claim something the video can actually deliver?
- Did any banned phrase survive? Replace it.
- Are the sentences varied in length, or do they all run the same? Fix the rhythm.
Then give me the final version only. No preamble, no explanation of what you did.