The advice everywhere is "remove the watermark", with no version of what happens if you do not. Two different things get that name, they carry different consequences, and one of them has nothing to do with reach at all.
Everything written about watermarks blurs the two, usually by somebody selling the removal of the second one. They are worth keeping apart, because the fix is different: the first is avoided by never re-uploading your own post, the second by a setting.
No platform publishes a number, and any article quoting one invented it. What they do publish is consistent across all of them: they want content made for their platform, and they say plainly that material visibly recycled from somewhere else is not what they promote to strangers.
So the useful version of the advice is not "remove the watermark". It is "do not hand them a reason to read your clip as a repost". Exporting a clean master once and posting that to each place is the whole of it, which is the same argument as posting the same clip in several places.
And if reach has collapsed, a mark in the corner is well down the list of likely causes. Work through the ordinary ones first on why shorts get no views.
Here the answer changes completely, and it has nothing to do with the algorithm. A brief that bans third-party branding on frame bans it because the clip is advertising somebody's brand and a second logo is a second brand in the shot. Break that and the submission is voided after the views have already landed, which is one of the documented ways this goes wrong - see why a clip gets rejected after the views.
That is the one situation where a tool's badge is worth removing before you post rather than afterwards. SnapDub's free plan puts a small mark on a clip and any paid plan does not, which is worth knowing before you submit a batch to a campaign that forbids it rather than after.
A watermark from another platform is a visible sign that the clip is a repost, and platforms publish guidance asking for content made for them rather than recycled from elsewhere. A small badge from an editing tool is not the same thing and no platform publishes a rule against it. Nobody publishes a percentage, and any article quoting one made it up.
Do not download your own post back out of an app to move it somewhere else. Export the finished file once from wherever you edited it and upload that to each platform.
Rarely, for reach. It matters when a campaign brief bans third-party branding on frame, because then the submission can be refused whatever the clip did.
Almost never. A clip that did not get watched usually failed in its first seconds or reached the wrong audience. Work through those causes before blaming a corner of the frame.
Free accounts carry a small SnapDub mark. Any paid plan removes it. That matters most if you are submitting to a campaign that forbids third-party branding.
It is usually visible in what is left, and cropping tighter costs you framing you needed. Re-exporting a clean file solves it properly and costs nothing.
500 free credits every month, no card required. One clean master per clip, ready for every destination.
Start clipping freeClipping for a paid campaign? Start with how clipping campaigns work. Wondering what to put under the clip instead? That is music and sound.