Is there a way to add a company name with more than 50 characters?

At this time the company name field in the Account Information tab of customer accounts is limited to 50 characters. We do not have a way to bypass this limitation. We do have a pending feature request that our Product Team is currently tracking merchant interest in, that would allow additional characters in this field. If you are interested in being added to this feature request please contact our support team and we'll be happy to add you.