Regarding the Front-End customization, you have multiple options:
1. Request access to Front-End (extra service) - our team will open another server for you and a development platform, so you or your team can work on the front-end changes in the most professional way.
2. Discuss with our own professionals, and they will provide you with an estimation in time and cost.
Want extra features or other types of changes? Contact us at firstname.lastname@example.org for more details.