The short answer
Yes, at any time. Choose your length on the Premium page and pay once; what you have already done carries over, and any amount you paid before in the same currency is credited.
Where to upgrade
Student menu
- Click Internship
- Click Premium
- Click Upgrade to Premium
Pay once, keep all your work
You can upgrade while your internship is running.
- Open Internship in your student menu.
- Open Premium (the upgrade page). It shows each length and what is included.
- Choose your length.
- Press Upgrade to Premium. The price is shown on the button before you pay.
What happens to my work
Everything you have done carries over. Your cards, checks and practice stay as they are.
Credit
If you already paid something towards this internship in the same currency, it is taken off. The page shows the final amount before you pay.
Extending later
On Premium you can extend to a longer length any time before your end date plus 30 days. You pay only the difference between the two lengths, and more mentor calls are added.
If something cannot be issued
If we cannot issue something you bought, you get your money back. Read the refund policy for the terms.
Upgrade prompts always have a Not now button and stay quiet for 7 days after you press it.
Updated 22 October 2026
Related questions
- Should I choose a Free or a Premium internship?Free is a whole 4-week internship with every task, the 3D lab, the AI mentor and a free certificate of completion. Premium adds people and proof: mentor calls, an engineer's review, the graded certificate, letters and longer lengths.
- How do I get my internship letters and reports?Premium internships include a joining letter, an evaluation report, a project report and, on merit, a letter of appreciation. They appear under Documents when each is issued. Free has the certificate of completion.
- Can I get a refund?Courses are free, so there is nothing to refund there. A wrong, faulty or duplicate charge is corrected or refunded. To ask, email info@wartens.com or send a request with your order number.
- How do I get my internship certificate?Finish your work and you are issued a certificate: the free certificate of completion for the first 4 weeks, or the graded Internship Certificate on Premium. Both carry a QR code anyone can verify.
- How do I start an internship?Pick a track on the Internships page, choose a start date, accept the terms and press Start my free internship. You need a free account, and no card is taken for the Free edition.
- Which internship track should I choose?Choose the track closest to the work you want to do. There are engineering tracks (such as PLC, panels and SCADA) and AI tracks (such as machine learning and data science). You pick one when you start.
Still need help? Visit the Help Centre or send us a request.
Still stuck?
Ask the AI assistant. If it cannot solve it, a person takes over and replies by email, usually within one working day.