The first problem you have is the word “order”. An order can only be approved by the Holy See. There are very few religious orders in the Catholic Church. The founding of orders was closed in the 1500s. The rest of the foundations were congregations. If this group is an order, it must have Pontifical Approval.
For Catholics to join it, the community has to be approved by the local bishop in their diocese or by the Sacred Congregation for Institutes of Consecrated LIfe and Societies of Apostolic Life, such as the Monks of Taize.
To be a consecrated religious you must profess vows in the presence of a religious superior and another witness who has the authority to serve as a witness for the universal Church. Otherwise, your vows are private, not public. To be a consecrated man or woman, your vows must be public. That’s canon law.
For a community to be Franciscan it must have the approval of the Council of Franciscan General Ministers. The members of this council are:
- Minister General of the Order of Friars Minor Observant (OFM)
- Minister General of the Order of Friars Minor Capuchin (OFM Cap)
- Minister General of the Order of Friars Minor Conventual (OFM Conv)
- Minister General of the Third Order Regular (TOR and OSF)
- Minister General of the Secular Franciscan Order (SFO in the USA and OFS in the universal Church)
Any other institute calling itself Franciscan is outside of the Franciscan order. They are Franciscan because they follow the spirit of St. Francis and his way of life. But they are not canonically part of the Franciscan Order. They are usually congregations such as many of the congregations of sisters who teach and nurse etc. But these congregations are autonomous. Their existence depends on the local bishop or the Holy See.
Fraternally,
JR