Is clapping in Synagogue allowed or not?

I previously attended a Reform Synagogue in the UK, where I was chastised publically for applauding something (I cannot recall what tbh) so I assumed it was a blanket ban… however, I’ve now moved abroad and visited a new [Reform] congregation, where they all applauded the new Bar Mitzvah as if it was completely standard.

I am genuinely confused at this point about what is/is not allowed. The time I was called out was so harsh I assumed that was an absolute universal rule, but now I have no idea what I am allowed to do and what will get me in trouble.

Can anyone enlighten me?