Can I invest in a cash ISA and a Help 2 buy ISA

Cubana48

I know this question has been askled time and again, but I just can't get my head around the rules.
I started a Help 2 Buy ISA last tax year.  As far as I understood, it is classed as a "Cash ISA", and therefore if i put any further funds into that same ISA this current tax year, I can't put anything into another cash ISA (unless of course it's a split ISA, but I haven't come across any of these yet).
However, I did ask Nationwide who i have the H2B isa with. 

They said "Rest assured with Nationwide you can open as many ISA's as you would like providing you do not exceed the £20,000 ISA allowance for the current tax year  (April 6th 2020 - April 5th 2021) . As long as the only ISA you hold currently is with Nationwide, you can most certainly open up another one."

Is this true?

Thanks

grumiofoundation

Nationwide allows you to split your cash ISAs allowance, so can pay into HTB (cash ISA) as well as other cash ISA in the same tax year. 
https://www.nationwide.co.uk/products/savings/isas-explained

They said "Rest assured with Nationwide you can open as many ISA's as you would like providing you do not exceed the £20,000 ISA allowance for the current tax year  (April 6th 2020 - April 5th 2021) . As long as the only ISA you hold currently is with Nationwide, you can most certainly open up another one."

Is this true?

It is true you can contribute to another cash ISA with nationwide. It is not true that you cannot have ISAs with other providers.

You can contribute to the other types of ISA (stocks and shares, innovative finance, lifetime*) this tax year with whatever provider you want as long as you don't go over £20000 across all types. 

You can have ISAs (including cash) with different providers from previous years, you can switch these, you just can't contribute any new money to these as you have paid into nationwide this year. 

*since you are a FTB lifetime ISA (if you are eligible and depending on how much you have in HTB/when you are looking to but) may be worth you looking at. 

epm-84

^ That's the good news.  The bad news is other than the Help2Buy ISA the interest rates Nationwide offer on ISAs are very low.  You'd be better off putting money in to the NS&I bond at 1.16% interest, even if you expect to earn over £1000 in interest (meaning you'll have to pay tax on the interest.)