Hi Adam!
Thanks for reaching out to us!
By default, our plugin do not show +/- buttons next to quantity. If you were seeing them before it could have been that your theme was customizing the ticket template to show them.
Did the buttons stopped showing after a plugin or theme update?
Could you please let us know which theme you are using? I know there are some themes that customize our templates like that, so this might be a conflict that we might be able to replicate on our end.
Also, please share your system information by following this guide > https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Thanks,
Victor