Op your campaign signature box or space is too big you can tell the designer to reduce it to fit the participants signature spaces. But it is just an observation and not compulsory but foe mere looking at it. The space is too wide. And it doesn't fit the space of the participants. I also made a screenshot of it.
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Thanks for your understanding.
Cheer.
It looks like that with mobile/phone, but it looks normal with desktop mode. Also other sig looks like that either on phone but also normal on desktop.